A global distributor of precision measurement tools


Yes. In fact, there are two main circumstances in precision measurement when you should not use a ball probe tip made of ruby. The first involves adhesive wear. Adhesive wear occurs when a ruby ball probe is used to scan aluminum and is caused by two materials having a chemical attraction. In order to avoid this, when scanning aluminum you should use a ball probe made of silicon nitride. The second circumstance in which to avoid ruby is when abrasive wear is a risk. Abrasive wear occurs when scanning cast iron and is due to the small particles that cause scratches on the ball probe tip. Zirconia should be used instead of ruby to avoid abrasive wear when scanning cast iron.
In fact, setting a dial bore gage using a micrometer may be the most common method used. However, doing so can be tricky when you are doing so alone and have only your two hands at your disposal. When in this position, a vise can come in very handy. You can use a vise as a means of holding the micrometer steady. It is advised that you wrap the micrometer in a towel if the vise you are using is not padded in order to protect your tool. Additionally, you can switch this method around and stabilize the dial bore gage in the vise while holding the micrometer in your hand. What these tricks do is allow you to have more freedom with your hands to do the actual setting. It will still be a bit tricky to accurately hold the gage extension to the micrometer spindle, but it will be much easier than trying to hold both tools steady at the same time.

Calipers are used to measure the distance between two opposing sides of an object in a variety of ways. These great devices come in a range of types, with three very common versions—Vernier caliper, digital caliper, and dial caliper. A Vernier caliper is the most common of all, and the most precise. A Vernier caliper includes a built in Vernier scale, which is a visual aid that indicates specific gradations between measurement marks. Utilizing a Vernier scale for measurement allows for an incredible degree of accuracy. A digital caliper is distinguished by the digital readout screen that displays the final measurement after the caliper has been adjusted appropriately.

Finally, a dial caliper is built with a small dial in place of the Vernier scale. The dial is rotated when taking a measurement and the final number will be in millimeters or inches, as read along the manual scale provided.

Technically, no, they are not mandatory for making a measurement, and depending on your level of skill and need, you might only be aiming for accuracy and knowing that the measurement you have is close to the true value of what you are measuring. However, in order to have the best quality measurement, you do need both accuracy and precision. Just knowing the value you found is close to the true value is not enough when you require higher levels of measurement skill. You will also want a measurement system that is able to repeat those accurate measurements again and again, thus creating precision. No matter how simple or complex your measurement system may be, striving for both accuracy and precision ensures that you have the best measurements possible.

V-blocks are called v-blocks because their v-shaped design is central to how they function. A v-block is built with a v-shaped groove in the center of the tool where you place the cylindrical part with which you are working. This channel, or groove, is designed to be a 90-degree space located at a 45-degree rotation from both sides of the block. Positioned at evenly-spaced distances from each side as well as the base of the v-block, the groove is built to completely center and balance the cylindrical part you are drilling, milling, cutting, or inspecting. Cylindrical workpieces are difficult to work with in precision measurement tasks because of their shape. The precise design of the v-block is intended to solve this issue by making cylindrical parts stable during work.
Most businesses and companies today are always working to strategize in order to have returning customers. While there are certain preference features of brand loyalty that are out of a company’s control, there are ways in which to boost brand loyalty. The quality of each and every product must be kept high. People want to spend money when it leads to top quality, and just one bad experience with a product itself can turn people away. Also, engage with customers on a regular basis. Send them updates and ask them for their opinions about your product. Reward and discount incentives are incredibly effective for getting returning customers. These techniques can also show appreciation to customers for their business. Finally, stay knowledgeable and relevant. Consumers want to know that you are an expert, and showing them this will foster trust and future return.
The variation in the coarseness and fineness of the thread of a screw impact the threads per inch. These differences also change the weaknesses and strengths of the screw, making it more or less ideal for a particular use. A greater number of threads can fit into an inch of length when the screw is made up of finer threads, meaning it has a higher TPI. A fewer number of threads can fit into an inch of length when the screw is made up of courser threads, meaning it has a lower TPI. Some of the strengths of a screw with finer threads, or a higher TPI, include being stronger in higher tension due to larger stress areas, as well as higher shear strengths and the ability for very close adjustments. Some of the strengths of a screw with courser threads, or a lower TPI, include a lesser likelihood of cross threading, a greater amount of resistance to fatigue, and allowance of thicker coatings and platings.

The standard in the field says that any variation found within the data from a gage R & R study that falls below 10% is acceptable. Once above 10%, but still below 30% variation, your system may still be used, but only under specific circumstances where addressing the issue is not possible at that time. With a variation above 30%, you should no longer be using your measurement system, as some part of it needs immediate attention in order to assure accuracy. The variation found by a gage R & R study is calculated using a ratio of the precision of the measurement system to the tolerance of the manufacturing process.

The technology behind the laser scan micrometer involves elements of simple optics. An object or part of interest is placed between the source of the laser beam and the receiving end on the micrometer. Then, a rotating optical element reflects or refracts the laser beam across the middle measurement area where the object or part is located. As the laser travels across this path, it is obstructed by the object or part, thus resulting in a shadow on the receiving end which is proportional in size and timing to the object or part being measured. The amount of the laser beam that successfully travels to the receiving end is collected and focused onto a photocell, where it is analyzed to detect the precise size and timing, which can then be converted into the final measurement.
The best analogy to think about when describing how an optical comparator works, is that of the classic classroom projector that your teacher likely used to go over homework or explain concepts to you when you were in middle school. Similar to this projector, the optic comparator works on the basic principle of projecting a magnified image of the part you are measuring against a screen. The optical comparator is built with a series of very accurate lenses that magnify and transpose the part image. Additionally, optical comparators are built to be stable devices that are placed at fixed distances from the screen being used, in order to ensure a highly precise image and therefore measurement. The whole process through which an optical comparator works uses optics, or the physical principles of light, in order to make measurement easier and more flexible.
Bluetooth technology is a method of communication among a grouping of two or more electronic devices. Bluetooth technology is both automatic and wireless, and works to streamline how devices communicate with each other. All communication through Bluetooth technology happens over low-power radio waves, travelling at a frequency of 2.45 gigahertz. In order to prevent interference with other devices in the area, such as a garage-door opener or a radio, Bluetooth maintains this low-power status. Bluetooth devices need to be within about 10 meters of each other to communicate successfully due to this low-power. While this level of proximity must be maintained, this form of communication does not require a direct line of sight between connected devices. Bluetooth technology uses spread-spectrum frequency hopping to connect to up to eight different devices, all within the same area. A personal-area network (PAN), also known as a piconet, forms when two devices begin communication via Bluetooth. Devices sharing a PAN hop frequencies in unison and therefore continue to operate together. Then, all information can be easily and instantaneously transmitted between the included devices.
Given the global economy of today, parts and tools are made and shipped all over the world. That there are different methods of measurement in various countries will have a serious impact on trade, and requires an agreed upon method of measurement or conversion. Consider a manufacturer in Europe ships a part to a North American warehouse. They may have checked surface roughness originally in Europe and cleared the part using Rz, but a check at a North American location later will likely use Ra resulting in a different number. Quality control engineers must use this information and make decisions regarding whether to accept or reject parts. There are methods of converting Rz measurements to Ra measurements and vice versa. Luckily, the Mahr surface roughness testers are able to provide measurements using both Rz and Ra algorithms, thus simplifying the process of conversion and re-testing.
Hardness, strength, and toughness are very similar concepts, but come with important distinctions. Hardness is simply the degree of resistance to deformation. Alternatively, strength refers to the amount of elasticity and plasticity of a material. In other words, how much can a material temporarily change shape (elasticity) and how much can a material permanently change shape without any damage (plasticity). These qualities in combination make strength. Toughness, then, is the greatest amount of energy that a material is able to absorb before breaking. This is distinct from hardness because hardness references the amount of force that can be applied before a change in structure. Toughness has to do with how much energy can be taken in by the material before a fracture occurs, and is sort of the opposing feature to hardness.
The regularity for recalibrating a set of gage blocks is not standardized. However, overseeing entities, such as American National Standards in Dimensional Metrology (ASME) and Federal standards do suggest a particular period of time after which you ought to recalibrate your gage blocks. The higher the grade of your gage blocks, the more infrequently you can recalibrate them. Gage blocks with a grade of 0.5 or 1 will usually be recalibrated once a year or annually. Gage blocks with a grade of 2 or 3 are typically recalibrated semi-annually or as often as monthly. Once you reach the level of master blocks, since they are not used as commonly as other grades of gage blocks, the typical length of time between calibrations is about 2 years. As a general rule, the regulatory power for matters such as recalibration rests on the shoulders of agency inspectors, rather than the National Institute of Standards and Technology (NIST).
There are no set of rules or regulations that exist defining how often a gage needs to be calibrated. Ultimately, the frequency of gage calibration is up to the company or facility owner or manager. While some believe that annual calibration is a good rule to live by, there are resources at stake that must be considered. Calibrating one gage or multiple gages too often will waste a large amount of time and money. However, on the other hand, not calibrating a gage that needs it will result in poor accuracy. Calibration should definitely be done in regular intervals, but the definition of regular will vary based on the drift and use of a particular machine. Using historical trend analysis can help determine what gages require more frequent calibration and when to expect that they will need to be calibrated.

Sure thing! Distinguishing between accuracy and precision can be tricky, and it can help a lot of people to put these words into a real world context. Let’s use golf as our example. Now, if a golfer hits a ball and gets a whole in one, that shot was accurate. If he hits a ball and it lands a mile from the hole, then his shot was inaccurate. This is because accuracy means being close to the true value, or in our example close to the pocket. Now, if that same golfer hits ten balls and they all land in the same sand pit, then his shots are precise. However, these shots are not accurate, since they are not near the hole. If the same golfer hits ten balls and they land all over the golf course, then his shots are not precise. In order to be precise, the golfer must hit all of the balls into the same area, whether that area is around the hole or not. Finally, if our golfer hits ten balls and they all land in the hole or right around it, then he has shown himself to be both accurate and precise.

As it relates to cost, metrology is important in all parts of the production process for a business. Starting from the design phase, the science of measurement ought to play a major role in product creation and development. With a well-designed product, costs will be lowered with fewer mistakes and a better final version. During the building stage, metrology is of course important in making sure that each product is identically measured and cut. The higher quality the metrology tools and devices, the higher quality the outcome will be. Finally, even after a product is in a consumer’s hands, metrology matters. Customer satisfaction and the likelihood that they will return to your company relies in the ability for metrology to have done its job.

No. Accuracy is different from resolution and in precision measurement it is important to know what they both are. The resolution of a gage is the degree to which the output of measurement can be broken down, whether in decimal places, parts, divisions, or counts. The smaller degree to which a gage is capable of making a measurement, the higher its resolution. Alternatively, accuracy is how close the output of a measurement is to the actual true value of the measurement. In other words, the less error there is in a particular measurement, the higher the accuracy of that measurement. A high functioning gage requires both resolution and accuracy—you need one to have the other.

No. Precision is different from resolution, just as accuracy is. The resolution of a gage is the degree to which the output of measurement can be broken down, whether in decimal places, parts, divisions, or counts. Precision relates to the resolution, but takes it a step further. The precision of a gage is the smallest (resolution), true (accuracy) measurement that can be taken repeatedly and reliably. The more precise a gage is, the greater its ability to take finely-tuned and accurate measurements again and again. While a gage might take the perfect measurement once, what you really want is to be confident that the gage will take as close to the perfect measurement as possible, every time—this is precision.

Yes, there are many kinds of micrometers out there. Some are basic micrometers, while others are specialized micrometers for particular jobs or measurements. What makes each micrometer unique is the kind of measurement purpose it serves. Universal micrometers are built with parts that can be swapped out depending on the job at hand. Blade micrometers, pitch-diameter micrometers, bore micrometers, tube micrometers, and bail micrometers are just few examples of micrometers with specialized parts that identify them for particular measurement goals. Digit micrometers use mechanical digit markers that roll and tell the measurement, whereas digital micrometers have an internal encoder that reports the measurement on a readable screen.

There are a number of different types of micrometers that you can buy to increase the versatility of your measurement workshop. While the more basic types of micrometer (inside, outside, and depth) will cover a number of measurements that you might be making, having a wider range of micrometers available will increase your measurement accuracy. Different micrometer types are built to specifically measure particular areas of a part, such as a screw thread, the dimensions of a groove, the various depths of holes, circles, tolerance limits, tubes and pipes, and much more. In measurement, precision and accuracy are key. The more specialized set micrometers you have, the higher levels of precision and accuracy you will achieve with your measurements.

It is completely normal for a micrometer to become un-calibrated. This is easily fixed by just recalibrating it. Often, you will be able to zero a micrometer by using a small pin spanner that adjusts the sleeve in order to realign its zero line with the zero line on the thimble. Once this adjustment has been made, you can double-check the accuracy of your micrometer by adjusting it such that the anvil and the spindle faces are touching, and seeing that the micrometer reads zero. Another way in which to test the accuracy of your micrometer is to measure a standardized item, like a gauge block or rod, for which you already know the exact measurement.

The resolution of your gage is pivotal to respectable measurement. In today’s world, technology is advancing at lightning speed. While there are bigger, more obvious ways in which this impacts the field of measurement, it also has a great impact on the smaller things too. The modern gage can be built to have an incredible degree of resolution. While a gage is used to conduct precision measurement on both small- and large-scale projects, this high resolution should never be sacrificed. The resolution of your gage is important in every practical setting because it directly impacts the accuracy of your measurement. Every project and measurement you take part in ought to value accuracy, and having high resolution is how this is done. No matter how basic the application, the technological advances that allow for incredibly precise measurement capabilities ought to be taken advantage of by all.
A go ring gage is made with the high limit of the part tolerance as well as a unilateral minus tolerance. Used in direct gaging, a go ring gage tests whether a part is oversized and therefore will not go through the ring. A no-go ring gage is built with the low limit of the part tolerance as well as a unilateral plus tolerance. The no-go gage tests whether a part is undersized by seeing if it passes through the ring and is also used in direct methods of gaging. A setting ring gage, or a master ring, is made to be used in methods of indirect gaging and serves as a comparator for other instruments which will then be used to test parts.
Micrometer heads are precision measurement tools that are designed as mounts onto other measurement instruments or precision fixtures. Used for measurement, positioning, and adjustment, micrometer heads are typically found on measurement jigs. More recently, these handy little devices have been found in use on precise feeding devices and cross-travel states on both manipulators and laser instruments. Given the growing range of applications for micrometer heads, the design options for these tools are also expanding. Micrometer heads can be customized based on their range of measurement, their type of stem, and their body size. Each part of a micrometer head can be specialized for the intended purpose with different spindle tips and leadscrews that are available.
Looking at whether a thread is male or female as well as tapered or parallel is important, but these are not the only ways to distinguish between thread types. Pitch size and diameter are also important factors to consider when purchasing or using a threaded part. The pitch size of a thread can either be the number of threads per inch or the distance between each specific thread, depending on whether you are using the imperial or metric measurement system, respectively. The pitch size of a thread is usually measured using a pitch gage. The diameter of a thread is simply the internal (when female) or external (when male) diameter across the edges of the thread. Thread diameter is important when determining whether the thread is tapered or parallel.
Hardness can be measured in a number of ways, and often you will want to choose a particular measurement tool or scale based on the type of hardness you need to assess. We will review a few of the more commonly used tests. The Brinell Hardness Test applies a hard metal ball to the material being tested from a vertical angle, using a known amount of force, for a specified amount of time. The degree of hardness is determined from the pressure diameter and the force applied. The Vickers Hardness Test uses a pyramid-shaped diamond indenter to make an indentation on the test material. Hardness is then measured using the diagonals of the resulting indentation. The Rockwell Hardness Test uses a diamond cone or steel ball to make an indentation on the material being tested. A number is then calculated using the resulting depth.
Beyond the basic inside, outside, and depth micrometers, there are a number of specialized micrometers built for different jobs. Tube micrometers are utilized to measure the thickness of a pipe or tube, v-anvil micrometers can make evenly-spaced measurements around a circle, and universal micrometers are made to have interchangeable anvils in order to complete a wide range of potential measurements. Groove micrometers are put to use when you need to measure either the external or internal dimension of a groove, pitch-diameter micrometers are used to measure the height of the thread on a screw, and limit micrometers can ensure that a part is within the bounds of a particular tolerance. Finally, laser micrometers provide incredibly quick and precise measurements.
As long as you are using rules to measure everyday objects that are on of an appropriate size, you will be able to get a reliable and accurate measurement. The major advantages of rules are that they are pretty cheap in cost and very easy to find. They also come in almost infinite sizes, are made of different materials, and come with different measuring units that can all be specified to the measurement you are taking. A well-made rule can also double as a straight edge for determining flaws or errors in other parts or tools. A major disadvantage of a rule is that it is not a good tool for measuring larger objects or distances that are greater than about a yard or meter. As measurement length becomes greater, the reliability decreases. Similarly, rules can only get down to a gradation of about 1.5mm or 1/16th of an inch. This limits the degree of precision you can accomplish on a smaller scale. Finally, a major consideration when conducting a measurement using a rule is to consider the impact of the observer. Most rules are read by the user and therefore very susceptible to reading error or sight misjudgment. For lower impact, day-to-day jobs, rules are an incredibly handy tool to have around. For higher-impact, very precise measurements you may want to consider using a more intricate measurement device.
The most important features of a ruby that make it the top-choice material for ball probes are 1) its resistance to abrasion and 2) its resistance to compression. A naturally hard substance, ruby is particularly tough when it comes to use in precision measurement. Knowing that your ball probe will not be damaged while conducting measurements is extremely important. The level of sphericity of the ball on a ball probe is crucial to the accuracy of the measurement. Any damage or warping that occurs will result in an unreliable readout. Ruby ball probe tips have incredible smoothness and are able to combat the damages that may occur with other materials.
Just the versatile measuring capabilities of the optical comparator are a huge advantage of this precision measurement device. Additionally, optical comparators offer more than just dimensions by providing length and width measurements as well as revealing possible imperfections along the surface of a part. Optical comparators can measure within a two-dimensional space, as opposed to other tools, like micrometers, that measure only one dimension at a time. More generally, optical comparators are very easy to use even by novice metrologists and can provide a great deal of information in a relatively short amount of time. Another great advantage of optical comparators is that only light comes into contact with the part you are measuring during the measurement process, decreasing the risk of damage when measuring more delicate parts. Finally, optical comparators come with major cost savings, ergonomic designs, reduced inspection time, and reduced costs of training.
The newer ultralight calipers are superior to traditional Vernier calipers in a number of ways. Built using hollow aluminum with steel reinforcement, these tools are extremely lightweight, making them simpler to use and easier to transport. The model makes sure that the tools can be well-guided in measurement and ensures protection from shock. Additionally, the ultralight caliper has consistent pressure control during measurement, which makes the force involved both stable and parallel across both jaws of the tool. This feature is very advantageous because it improves repeatability when measuring larger diameters. The ultralight calipers are made with a titanium coating on surfaces exposed to other parts, helping protect from corrosion and scratching. These tools also come with a digital measurement readout. In general, ultralight calipers allow for the same or greater levels of precision and accuracy as Vernier calipers, with the added advantages of being simpler to use and having much more reliability.
The grade of a gage block is a specific rating given to the gage block that represents the degree of tolerance it has. Gage blocks used to come in grades depicted by letters – A, AA, AAA, B. Now the standard labeling is in the form of numbers ranging from 0.5 to 3. Each grade has a different purpose, but generally, the higher the grade, the tighter the tolerance. Tighter tolerances, and therefore higher grades, will result in a greater amount of accuracy and precision in your measurement. Depending on the country and the company you are working with there will be different ways to label grades. Higher grades, representing smaller degrees of tolerance (or higher degrees of tolerance tightness; ±0.05 μm) are often used to establish standards and calibrate, while higher grades, representing slightly larger degrees of tolerance (or lower degrees of tolerance tightness; 0.25 μm to − 0.15 μm) are used as shop standards for precision measurement purposes.
Graduations styles come in three main categories for micrometer heads. These styles include normal graduation, reverse graduation, and bidirectional graduation. Because of this, make sure that you are aware of what type of graduation style is present on a micrometer head in order to take an accurate reading. Normal graduation style is just like the graduations seen on a standard outside micrometer where the reading will increase when the spindle is retracted into the body. Reverse graduation style is when the reading on the spindle increases as it advances outside of the body of the micrometer head. Finally, bidirectional graduation style can be used and read in either the normal or reverse style, such that it is used to make measurements in both directions feasible. On bidirectional style micrometer head graduations, the numerals for normal readings are typically in black, while the numerals for reverse readings are typically in red. Digital displays can be useful on micrometer heads no matter what type of graduations are used to improve readout precision.
The specific markings on the measurement tool itself that evenly divide up the space of the scale are called graduations. These markings are typically straight when found on a rule, but may also be curved, like in the case of a protractor. When using a rule, you will want first to make sure that the graduations are appropriate for the type of measurement are you doing. You will need a rule with different gradations when your measurement requires more finite increments than when you are getting a rough estimate of a length. The common naming system for graduations uses different numbers and letters to distinguish the measurement capabilities such as 3R, 4R, 9R, and others. The different names signify the length of the measurement increments that can be found on that particular rule. For example, a 3R rule measures in 10ths and 50ths on the front and 64ths and 32nds on the back, a 4R rule measures in 8ths and 16ths on the front and 64ths and 32nds on the back, and a 9R rule measures in 16ths and 32nds on the front and 64ths on the back.
Calipers are wonderfully simple tools used to measure the distance between two points on a part or object. Depending on the work piece, you might need to measure an interior distance, an exterior distance, a depth distance, or the distance from the side of the object to a particular point. All of these types of measurements can be accomplished using calipers. Overall, there are eight different caliper types today. The available varieties of caliper are the Vernier caliper, the dial caliper, the digital caliper, the inside caliper, the outside caliper, the divider caliper, the oddleg caliper, and the micrometer caliper. In fact, the micrometer caliper is the same tool as a micrometer, but using the full name.
Above and beyond the basic design formats of balanced and continuous readout, there are a number of different types of dial indicators that users can choose from. Test dial indicators are built with a needle to one side. These dial indicators are adjustable and may be calibrated to complete a measurement of a number of different machines and parts making them very versatile. Plunger dial indicators look very similar, but come instead with a plunger on one side, attached to a hinge point. These indicators can be either mechanical or electrical in design and are commonly used to measure injection molding machines. Lever dial indicators are identified mainly by their lever and scroll, which work together as the mechanism that moves the stylus to take the final measurement. Dial indicators can also be distinguished by their connection method. The connection method determines how the indicator connects to what it is measuring, and may involve a c-clamp or a swivel clamp.
Micrometer heads will vary slightly depending on the supply company which is supplying them. However, the typical selection of micrometer heads available includes digimatic heads, standard heads, high function heads, and specially designed heads. Some of the subtypes include non-rotating spindles, quick-operating, fine-adjustment, and locking-screw designs. In terms of other design features, micrometer heads will vary depending on the measurement range, the stem type, and the body size. Overall, the factors on a micrometer head will vary by range, graduation, stem, spindle face, resolution, and thimble diameter. Some of these design features are widely applicable and may be ideal for more general use of a micrometer head. However, for specialized jobs, you may need to use features that are intended for those certain precision measurement needs, but not others.
There are there main types of optical systems used in optical comparators: simple optics, corrected optics, and fully corrected optics. The simple optics system uses only a source of light, a lens for magnification, a mirror for reflection, and a projection screen. Simple optics will display an image that is reversed and upside-down. The corrected optics system adds to the simple optics system another internal mirror such that the image it produces is actually right-side-up and reversed. Finally, a fully corrected optical system creates a final projected image of the part that is both right-side-up and unreversed. Any of these systems can be sufficient to complete a measurement on an optical comparator, but the more advanced a system you use the less work there will be when converting the taken measurement back to the corresponding measurement of the part.
The dial reading on some indicators will come with a more limited range, which may be the ability to make only a single revolution around the face of the dial. These types of readout are called one-rev indicators. This range is very useful when it comes to measuring deviations that require a high degree of magnification and level of detail since they help to eliminate any chance of miscounting the number of revolutions. Higher range indicators vary in the number of revolutions they are able to make around the dial, with some reaching up to ten revolutions. Higher range dial indicators are better for measurements that do not require much magnification. These final measurements are calculated through a summing process. Often, in order to allow the user to keep up with the number of revolutions and complete accurate measurements, a continuous dial reading is preferred.
The stem on a micrometer head is the main mounting feature and thus very important to the overall functioning of the device. Stems on micrometer heads can be plain type or clamp nut type and are typically made with an h6 tolerance for either a metric or imperial size. The plain stem is the most basic design and can be utilized in a wider range of applications than the clamp nut stem and is better for very slight positional adjustments in the axial direction on installation. The clamp nut stem is best for clamping micrometer heads in a fast and secure manner. One benefit of the clamp nut stem over the plain stem is that it does not require a split-fixture arrangement or adhesive for fixture. Depending on the particular measurement job you are completing you will want to make sure you have the proper stem type on your micrometer head.
The most important factor that impacts the accuracy of the measurement taken by a caliper is the skill of the operator. This is why it is important to choose the type of caliper that makes the most sense for the job at hand. If you choose a caliper that has more capabilities to complete an outside measurement, like a Vernier caliper, but do not know how to use it properly, you may negatively impact your accuracy. It is better to choose a caliper you know how to use in order to get a more precise and accurate measurement. Another factor to keep in mind is calibration. You want to make sure that if possible, your caliper is regularly calibrated. If you are working with an uncalibrated caliper (such as a one-purpose caliper like the inside caliper), then you will want to make sure that the measurement reference you are comparing it to is calibrated. Finally, to ensure accuracy of your caliper, you want to make sure that it always has a proper zero point. Mishandling of certain calipers can mess up the zero point as well as the eventual measurements.
Calipers are capable of measuring in four ways: 1) outside diameter, 2) inside diameter, 3) depth distance, and 4) step distance. Whether you have a Vernier, a digital, or a dial caliper, you will be able to complete all four of these potential measurements. Outside diameter measurement assesses the distance from one edge of an object to another using the outside dimensions. Inside diameter measurement looks at the distance between two inside points of a space or hole. Depth distance measurement provides the distance to the bottom of a space or hole. Finally, step distance measures the distance between an upper and lower step of an object. Calipers are incredibly useful because they can accomplish each of these different measurements. These highly adaptable tools are a great asset to any precision measurement workshop.
While there a couple of methods of setting a dial bore gage, no method is perfect, and choosing one will likely depend on preference and availability of tools. First, you can set your dial bore gage using a micrometer. By placing your gage between the spindle and anvil on the micrometer, and zeroing the indicator to the minimum reading provides your nominal size. Second, you can use a set of master rings in order to set a dial bore gage. This method is very precise, but can be costly depending on the number of master ring sizes you require. Third, you can use gage blocks to represent your desired nominal size and set your dial bore gage in this way. Gage blocks are often easily accessible, but this process takes a bit more time. Metrologists will likely have their own method of choice for setting a dial bore gage, but knowing how to use these multiple methods can come in handy depending on tool availability and the circumstances of the measurement.
The MIN and MAX readouts from your indicator are telling you the lowest and the highest point on the surface of your part, respectively. These measurements are determined by running the indicator across the surface of your part while rotating it along a centralized axis. The indicator will pick up on the points that are lowest and highest, allowing you to have a quantitative measurement of any discrepancies along the surface. These measurements are important for determining the flatness, roundness, concentricity, or any other intended shape. Once a part is made, testing the MIN and MAX of the surface is crucial to understanding if the part is shaped precisely the way it is supposed to be.
Wyler strives to make the best quality precision measurement tools and software available. At the heart of what they do, Wyler focuses on customer satisfaction. They aim to be competent and reliable, and they ensure statements of quality and specifications with everything they build and sell. Wyler sees each supplier and distributor they work with as a partner, supporting fair and balanced relationships across the world. Additionally, as a company, Wyler is committed to respecting rules and regulations concerning the environment. They utilize natural resources carefully and always aim for quality over quantity. All the employees at Wyler are motivated experts who are part of the larger Wyler team. Wyler knows that they would not function without the hard work and devotion of their employees and so supporting them is a central goal. The overall strategy of Wyler is to continue to provide precision measurement tools and resources for the long-term, strengthening their role as leader in the field, and fulfilling their responsibility to their customers and employees alike.
There are three most basic categorizations of micrometers. Those types are inside, outside, and depth micrometers. The reason that these are known as the most basic types is that the majority of the measurements you may need to complete can be accomplished with these tools. An inside micrometer is used to measure the internal dimensions of an object, an outside micrometer is used to measure the external dimension of an object, and a depth micrometer is used to measure the depth of a hole. In fact, the outside micrometer is one of the most widely used precision measurement tools overall. These versatile micrometers are excellent devices to have on hand no matter what specific type of metrology you do.
Ceramic gage blocks are a newer, but very popular option when compared to steel gage blocks. A few of the main advantages of ceramic gage blocks include the zero thermal expansion coefficient that ceramic has, the zero phase shift, and the resistance to corrosion. Due to these qualities, ceramic easily adapts to new temperatures, is not as impacted by risk of phase shift, and will last a very long time without damage from grit or humidity. In general, ceramic gage blocks are advantageous over steel gage blocks because they last a very long time without corrosion or damage. The main disadvantage of ceramic is that it is more fragile than steel. If being utilized in a context where there is risk of breakage, ceramic may not hold up quite as well. Ceramic gage blocks are an excellent choice, depending of course on your precision measurement needs.
Steel is the classic choice when it comes to deciding on a base material for your gage blocks. Steel has a distinctly hard surface and is therefore resistant to chipping or cracking. Additionally, this hard material will be protected during lapping and ideal for wringing. Another major advantage of steel gage blocks is that most industrial parts that will need to be gaged will also be made of steel. Therefore, steel gage blocks will very easily match the thermal expansion coefficient of the material being measured. The greatest disadvantage of steel as a gage block material is that it is not stable over time. While advances have been made, steel will expand over time due to the crystal makeup as well as the hardening process. Furthermore, steel is subject to corrosion caused by scratching or humidity and will likely rust over time. Steel gage blocks can be the ideal choice in a shop environment and are built strong depending on what you need for precision measurement.
One of the incredible capabilities of an optical comparator is that it can complete measurements in numerous ways, depending on what you are measuring and the size of your part. One measurement technique used with optical comparators is to directly compare the projected image created to measurement units such as a ruler or protractor. These image measurements are easily converted back to the corresponding measurement of the part because the level of magnification and exact location of the part are known. A second way to measure with an optical comparator is to use screen rotation. Screen rotation utilizes a marked zero point on the image in order to measure various angles on the image, which are then converted back to corresponding angles on the part. A third common measurement method involves using measurement by motion. Ideal for larger parts that cannot be completely projected at once, measurement by motion requires the operator to move the worktable or use a sliding fixture built right into the machine. Optical comparators are great tools that can do a range of measurements for a range of parts.
Hardness in general is the amount of resistance a material has to any kind of deformation from an outside source. The three main types of hardness include: indentation hardness, scratch hardness, and rebound hardness. Indentation hardness is the resistance a material has to deformation from a consistently applied force. The higher the indentation hardness, the greater ability to not have any resulting deformation from applied compression. Scratch hardness is the degree of resistance one material has when it is subjected to friction caused by another material. Materials that are less impacted by this scratching will have higher scratch hardness. Finally, rebound hardness is the amount of bounce that occurs when an outside object is dropped on the material in question. Often tested with a diamond-tipped hammer, a material with higher rebound hardness will lead to a higher bounce when the hammer is dropped.
The two main design formats for dial indicator readout are balanced and continuous. When a dial readout is balanced it means that the numerical measurements run in the two opposing directions away from the middle zero point. These types of readout are ideal for tolerances that are bilateral in nature, for example ±0.006 inch. The dial of the indicator is balanced in either direction and so can be positive or negative. When a dial readout is continuous it means that the numerical readout goes only in one direction, starting at the zero point and continuing all the way around in one full rotation. Continuous readouts are typically seen when the tolerance is unilateral, for example –0.000 to +0.003 inch. Both balanced and continuous dial reading designs on a dial indicator have reverse versions. On a balanced dial reading this is seen in the positive numbers being to the left of the zero point and negative numbers being to the right, while on a continuous dial reading this is seen as the whole revolution scale reversed. Reversed continuous readouts are sometimes called counter-clockwise dial indicators.

Trimos specializes in precision measurement instruments, accessories, hardware, and software. They sell height gauges, horizontal measurement instruments, surface measurement instruments, portable measuring instruments, and more. The particular height gages they offer include: TVM and V3 through V9. The horizontal measurement instruments they carry are: Tels, Alesta, Horizon Granite, Horizon Setting, Horizon Premium, and Twinner. These tools also come with an available lab component Labconcept or Labconcent Nano. The surface measurement instrument at Trimos is a TR Scan that comes with white light interferometry technology and chromatic confocal microscopy line technology. They also offer a wide range of portable measuring arms depending on your needs to allow for simple and accurate 3D measurement.

Finally, beyond all of these tools, Trimos also carries hand tools, digital indicators, internal measuring instruments, digital scales, measuring probes with digital displays, measuring benches, and measuring stands.

Above and beyond the basic concept of the laser scan micrometer, these tools come in different varieties and with different accessories that help to specify their measurement capabilities. They can be purchased in different sizes and models. Additionally, you might need a laser scan micrometer with a separate display unit or an integrated display, both of which are available. The four main types of laser scan micrometer include the automatic (sometimes called the inline), the bench-top (sometimes called the floor), the handheld (sometimes called the portable), and the machine-mounted. The typical optional accessories that are available alongside laser scan micrometers include: a workstage or an adjustable workstage, a calibration gage set, a wire guiding pulley, extension relay cables, extension signal cables, air-screen covers, and air-blow covers.
In build and capability, a Vernier caliper, a dial caliper, and a digital caliper are all very similar. However, they also have important distinguishing features. All three of these caliper types are built with multiple functional measurement techniques. With inside jaws, outside jaws, and a depth probe, these calipers can complete almost all of the same measurements as the one-purpose calipers. One disadvantage of being multi-faceted is that these calipers may not be quite as flexible in range of distances as the one-purpose calipers, like an outside caliper. The central distinguishing feature of these calipers is the way in which the measurement readout functions. On a Vernier caliper, there is a Vernier scale with gradation marks that minimize operator error and improve interpolation. On a dial caliper, the readout is a simple dial face. These are good for completing differential measurements. Finally, on a digital caliper, the readout is a digital face. These allow for very precise measurements and may even be easily connected to a computer for data recording and collection.
The standard IP rating consists of two numbers. Each of these numbers represents a specific level of protection. The first number in an IP rating represents the level of protection against solid ingress, while the second number represents the level of protection against liquid ingress. As a general rule, as each of these individual numbers increases, the amount of protection goes up. The IP rating for solids increases on a scale from 0 = No protection to 6 = Total dust ingress protection. The IP rating for liquids increases on similar scale from 0 = No protection to 8 = Protected against continuous immersion to a specified depth or pressure. Different factors to consider when choosing an IP rating include the context of the work you plan to do, what length of time you will need high or low levels of protection, and what debris or accidents could occur at the worksite.

That the Fowler zCat DCC CMM is direct computer controlled means that all of the features and capabilities of the CMM can be controlled by and recorded in the connected computer. The advanced technology of the zCat allows for direct communication between the tool itself and a computer through a wireless connection. The machine can be operated through the computer, or previously manual operations can be stored and repeated through the computer at a later time. Furthermore, all measurements captured by the zCat are swiftly and automatically transferred into the computer and stored in an Excel spreadsheet. Every Fowler zCat comes with built in ControlCAT software that performs all of these functions. The ControlCAT software is easy to use and operated by the touchscreen interface built into the zCat.

Setting a dial bore gage refers to the process of aligning the gage to a required zero point. The zero point is the nominal size, or reference point, that you use when taking the measurement of a bore. There are a number of ways to set a dial bore gage, but the end goal is always to match the zero readout of the gage to the nominal size you are striving for. The outcome of a properly set dial bore gage is being able to easily read off the measurement of a bore as it compares to the zero point on your gage. Any variation away from the zero point is your final measurement. Setting your dial bore gage before each use is important to ensure accuracy in every measurement.
The lifetime warranty can be applied to a subset of amazing Fowler and Sylvac metrology products. Certain calipers, indicators, and micrometers all fall under the warranty. These highly utilized precision measurement tools are fundamental to any measurement process. Fowler wanted to show that their products can stand the test of time, and are doing just that by backing each of them with the new lifetime warranty. The specific products available with the lifetime warranty include: Mark VI Electronic Indicators (with Integrated Bluetooth Technology or with Analog display), the Ultra-Cal V Electronic Caliper, and the Rapid-Mic Electronic Micrometer. Each of these tools come in a range of sizes and models and every one of them can be covered with a lifetime warranty.

The TESA Micro-Hite height gage by Brown & Sharpe is used in all kinds of metrology and a number of different industries. Mainly, these include automobile, moulds and tooling, medical, or plasturgy industries. In the automobile industry, height gages might be used to measure injection systems, brake systems, or engine components to ensure quality and precise design. The complexity and exactitude involved in moulds and tooling requires an excellent machine such as the Brown & Sharpe height gage. These height gages are vital to measuring various molds and tools that are then used to create millions of copies of different foods, aeronautics, cosmetics, etc. The standards set within the medical field are very high, and the controlled nature of medical devices and tools is very strict, since their eventual use involves high risks and high rewards. Brown & Sharpe height gages are built for excellence, and come equipped with the high-level analytic capabilities, regulatory compliance, and measurement precision that are imperative to the medical industry. The variability of plastic development and the regularity of product within the plasturgy industry is the perfect place to see the Brown & Sharpe height gage shine. This tool has the validity and stability that is essential to all processes in working with plastics.

Every bore gauge needs to be set to match a master standard before it is used. A common mistake is when users do not purchase and use a setting master for this process prior to the first use of a new bore gauge. Whenever a new bore gage is purchased, a setting master ought to be purchased as well. Setting rings, micrometer, and master setting kits can all be used as master standards to complete the bore gage calibration procedure. If the step of matching a bore gage to a master standard is skipped, then the gage will be used without being properly set and all measurements taken run the risk of being inaccurate. If you are a new bore gage owner, or are looking to buy one in the future, remember to complete the bore gauge calibration procedure before using your new tool.

A coordinate measurement machine, commonly abbreviated to CMM, is a measurement tool that takes a geometric reading of an object using a probe that senses the angles and points that make up the object. The probe on a CMM can be one of many types including white light, optical, laser, or mechanical. Furthermore, the probe on a CMM can be either manually or computer operated. On the Fowler zCat DCC CMM, the probe is both manually and computer operated and transitions smoothly just by how the operator decide to use it. Most CMMs utilize the Cartesian coordinate system to determine the discrete points on an object. This movement along the X, Y, and Z axes helps to create a precise three-dimensional model of a part.

A reject is any product that is faulty or not usable therefore must be discarded. Any reject that is built has been a waste of resources and so leads to increased costs for no reason. Using metrology throughout the production process will help to reduce the number of rejects that are accidentally made. With higher levels of precision and accuracy from the beginning, the science of measurement protects against the risk of rejects and therefore against the associated costs. Rejects will occur no matter what you do, whether because of operator error, material fault, or machine maintenance. However, by introducing metrology methods throughout, the number of rejects that result and the cost of having them are bound to decrease.
A rule, sometimes referred to as a ruler or line gauge, is a measurement tool comprised of a straight edge device marked with graduations for measurement. Rules can be made of metal, plastic, or wood. They come in various lengths and widths from which you may choose depending on the nature of your measurement task. The graduations on rules may be etched, scribed, engraved, painted, or printed onto the tool, and depending on the material of the rule will have differing durability. Rules may be flexible or rigid in terms of build, with flexible rules being made to wrap around objects or corners for measurement. The five standard types of rule include: spring-tempered rule, flexible rule, narrow rule, hook rule, and short-length rule.
The zero error on a caliper has to do with the baseline point of the caliper. If properly cleaned and closed, a caliper ought to measure 0.00 exactly. Occasionally, this will not be the case and then you have a zero error. A zero error on a caliper can be positive or negative in direction. A positive zero error occurs when the caliper jaws are closed, but the readout has some positive value, whereas a negative zero error occurs when the caliper jaws are closed, but the readout has some negative value. This can occur when a caliper is not properly maintained, or after normal wear and tear from use. No matter the cause, a zero error occurs when the caliper is not properly calibrated to the zero point. Knowing if your caliper has a zero error is extremely important for the accuracy of your measurement. If there is any discrepancy in the calibration of your caliper, you must then account for it in your final measurement.
Average Roughness (Ra) is an algorithm used to measure the roughness of a particular surface. Ra is the most commonly used parameter of surface texture in North America, as opposed to Mean Roughness Depth (Rz), which is used most commonly in Europe. The average length between the valleys and peaks across a surface is found, and then the deviation from the mean surface line across the whole measured surface within the sampling length is determined. When using Ra, all extreme outlier points of measurement are neutralized in the calculations such that they do not have a significant impact on the final output. Ra is known for being a simple and consistent parameter of surface roughness. Each of the Mahr surface testers offers a readout for Average Roughness (Ra).
Brand loyalty is an area of interest in most businesses today, and relates to the positive feelings toward and dedication to a particular brand held by customers. Generally speaking, brand loyalty can be defined as how much a customer returns to a specific brand whenever making a purchase or seeking services. In metrology, customers who are brand loyal will continue to return to their measurement manufacturer of choice. Another way in which people can exhibit brand loyalty is through word of mouth, and by recommending one metrology company to friends and family. In metrology, brand loyalty is common among customers. One of the more regular trends seen is that companies who produce high quality, and often more expensive, supplies retain the greatest amount of brand loyalty. Brand loyalty is the result of an established relationship between business and consumer.
The process of direct gaging is when a ring gage is utilized as a means of checking the size and/or roundness of a part. When conducting direct gaging, the ring gage can either be a go ring gage or a no-go ring gage, sometimes known as a not-go ring gage. Direct gaging, or fixed-limit gaging works to establish a physical limit for the acceptable outer diameter of a part. Depending on the high limit (go gage) or low limit (no-go gage), it can be determined whether the part is oversized, undersized, or within an acceptable limit. Additionally, direct gaging is useful for testing the roundness of a part that might be missed when using a micrometer or some other tool as a comparator.
The process of indirect gaging involves using a ring gage as a reference point against which to set other measuring tools or instruments. Because the ring gage itself is not being used to test the final part, but rather to set another tool which will test the final part, this process is indirect. In essence, two tools are used in conjunction in order to assess the acceptableness of the part being measured. When conducting indirect gaging, the ring gage is known as the master ring or the setting ring. The unique feature of a setting ring is that it is built with a bilateral tolerance. A bilateral tolerance is defined as one half of the specified tolerance added and subtracted from the designated size. This measurement ought not to deviate any more than 0.00001in from the ring gage nominal size.
Mean Roughness Depth (Rz) is an algorithm that is used in order to measure the surface roughness of a part. Rz is the most commonly used parameter of surface texture in Europe, as opposed to Average Roughness (Ra), which is used most commonly in North America. The vertical distance between the lowest valley and the highest peak from five different sample lengths from the surface are found. These distances are then averaged. When using Rz, any extreme outliers have an enormous impact on the final measurement due to this method of averaging. Rz can be measured through three different calculations that have changed over the years, making it important to know which algorithm is being used. Each of the Mahr surface testers offers a readout for Mean Roughness Depth (Rz).

Measurement conflict resolution, sometimes called measurement dispute resolution, is when a suppler and a user disagree on the finite measurement of a gage or precision measurement instrument. Such conflicts can gravely impact relationships within the field. Most experts suggest that having methods in place ahead of time to resolve any measurement conflicts can lead to a quicker and more satisfactory resolution. Vermont Gage subscribes to the methods used by the American Measuring Tool Manufacturers Association (AMTMA). These methods include “The Referee Method” and “The Universal Standard Method.” The Referee Method involves an uninvolved third party taking a measurement of the disputed part or tool that will then serve as the agreed upon true measurement by both disputing parties. The Universal Standard Method involves focusing on uncertainty budgets of the involved parties. In this method it is up to the party questioning the validity of the measurement to present their uncertainty budget to the opposing party with the goal being to resolve that incorrect parts of one budget with the correct parts of the other.

While different experts in the field of metrology have differing opinions on how often gages need to be calibrated, one thing is agreed upon—there must be some sort of calibration schedule. One potential solution to regular gage calibration is to create a gage control program. Very simply, a gage control program is a systematized way to determine how often a gage requires recalibration. The central goal of a gage control program is to create a document that names each gage, records the intervals of calibration, and classifies the gage within a bigger system of groups defining when calibration will occur. This document then allows you to see when a particular gage was last calibrated, how often it has been calibrated over time, how frequently it is utilized, and who is charge of maintaining its use.

The repeatability measured by a gage R & R study refers to the variability in measurement which results when one individual measures one part using one gage. In other words, when one operator measures one part using one gage again and again, the resulting changes in measurement are due to an error that is occurring within the equipment. While infinitesimal repeatability issues are going to be expected, a gage R & R study can root out more serious inconsistencies. Testing repeatability is an important part of gage R & R studies, and it is what tells you that your gage is imprecise and requires attention.

The reproducibility measured by a gage R & R study refers to the variability in measurement which results from the irregularities of the operator. Reproducibility is tested by having multiple individuals measure the same part using the same gage. In this way, a gage R & R study can adequately determine if there is variability due to the individuals measuring the product, rather than the measurement process or equipment itself. The reproducibility is necessary to know how much variation results when different operators use the same equipment. Just as it is important to know that your equipment is functioning well, it is necessary to know how individuals are impacting the measurement process of a larger manufacturing system.

Just like everything Fowler High Precision makes, the new lifetime warranty is innovative and unmatched. For 68 years Fowler has made the highest quality metrology products available, and it is about time they backed them up with an amazing offer like a lifetime warranty. This warranty truly covers you and your precision measurement tool for life. Accuracy and dependability are givens when it comes to any of the Fowler measurement products, so why not make them even more reliable with a lifetime warranty. These warranties are on certain products only and available through only a select group of premier distributers. The Fowler lifetime warranty is special because it is a bond of trust between Fowler and each customer who gets one. Call your Fowler distributer today to learn more.
Spread-spectrum frequency hopping is a communication technique used by Bluetooth that allows it to successfully connect with up to eight different devices without unwanted interference among them. This technique decreases the chance that multiple devices will transmit information on the same frequency level at the same time. Basically, Bluetooth switches regularly between 79 different randomly chosen frequencies within the designated range 1,600 times every second. This allows each of the connected devices to use a very particular portion of the available radio wave spectrum and significantly decreases the chance that they will interfere with each other. Additionally, should any interference occur, it will only last for that very short amount of time, making it negligible. Every Bluetooth device automatically uses spread-spectrum frequency hopping.
Sylcom Software is a precision measurement computer program used to both display and record ongoing measurements taken with a variety of instruments. The precision measurement tool being used can connect to Sylcom through a wire connection directly, or through a wireless connection using Bluetooth technology. Many Fowler Precision tools come with Bluetooth technology, making it simple to load them into Sylcom through a receiving USB dongle. Sylcom itself is very straightforward to use. Simply log in as an administrator, and begin by configuring your instruments. This is how Sylcom builds Channels and Pages to store raw inputs from your devices. Once a tool is configured, a channel is automatically created. Then, simply add the channel to the pages by configuring the channel, adding the proper formula, and connecting the input. Through the Pages function you can change the readout type for your data, see live data on screen, change display modes, and store all recordings. The Work Menu feature in Sylcom allows you to select what is displayed on your Bluetooth precision measurement tool. You can adjust the internal configuration of the Bluetooth connected tool and write them back to the tool itself. This amazing software is a must have for storing and organizing your precision measurement data collected from Fowler Bluetooth instruments.
Above and beyond the wide-ranging selection of devices they sell, Phase II also offers a unique “Specialty Product Manufacturing & Development” service. Through this service, you are paired with an experienced Phase II team member throughout your purchasing process. This team member will guide you through the steps from the design state of your metrology instrument to the finalization of your purchase. By taking part in this great service, you are guaranteed one-on-one guidance ensuring that you get exactly the tool you need and want. If you have any questions about the best precision measurement part, tool, or supply for your project, your Phase II team member will be there to help.

The Coefficient of Thermal Expansion, also known as CTE, is the degree to which a given material expands when it is heated. Depending on what material you are working with, that material will have a specific CTE that differs from other materials. When heat is applied to a substance, the distance between the individual atoms that make up that substance increases. This leads to an overall expansion of the material dependent upon the number of atoms involved, and therefore its size. Knowing the standardized CTE of a material allows you to account for any expected expansion when conducting measurements or using the material to build parts.

The names male and female when referring to threads basically refer to the location of the threads themselves in relation to the part. When the ridges circling the part are located along the exterior surface, then it is said to be a male thread. Alternatively, when the thread ridges are found along the interior surface of the part, then it labeled as a female thread. To summarize, internal thread ridges are female while external thread ridges are male. The most common scenario when pairing together two parts is that a male thread will be used to connect with a female thread. When pairing of threads is done in this way, the ridges line up and the threads are rotated into each other, functioning as a securing mechanism.
One potential way to distinguish between thread types is to determine whether the thread is tapered or parallel. You can see the different between these two types by looking along the length of the thread. A thread that is tapered will narrow in its diameter across the entire length of the part. Alternatively, a thread that is parallel will remain the exact same diameter across the part’s length. Whether a thread is tapered or parallel can typically be determined by just looking at it, however when the difference is minute you can use a caliper to make measurements of the diameter along different points. Knowing whether the thread you are working with is tapered or parallel will help you to find the perfect fit into a corresponding part.
Threads per inch, or TPI, and thread pitch are different but related methods of measuring the position of the threads on a screw, bolt, or fastener. The thread is the helical protrusion that is found along the length of these parts. TPI is a numerical representation of the number of threads in every inch of length along a screw. The thread pitch is a measurement of the distance between two thread peaks. Thread pitch is used when measuring or referring to metric parts. Both the TPI and thread pitch of a screw, bolt, or fastener can be converted between the alternative value using conversion tables, calculators, or a mathematical formula. Knowing the TPI or thread pitch of a particular part is important information for knowing whether the part will fit into the space it is supposed to go.

Originally founded in 1968, Vermont Precision Tools, Inc. specializes in the production of knock-out pins, ejector pins, perforators, special punches, and all round and ground pins. They service cold heading and power metal industries specifically. Vermont Gage was formed twelve years later in 1980 as a specialized gage manufacturing division of Vermont Precision Tools, Inc. Today, Vermont Gage is the proud manufacturer of a large selection of gage pins and sets, Class X gages, taperlock gages, ring gages, and thread ring gages. An astounding 98% of the products sold by Vermont Gage are manufactured by the company itself. The main manufacturing facility is located in Swanton, VT with a thread gage manufacturing plant located in Franklin, KY. Both facilities are built with state-of-the-art equipment. Vermont Gage prides itself on its high quality products, its competitive prices, its technical expertise, its innovative marketing, and its partnerships with distributers and users alike.

One thing seems true—customers in the field of metrology are brand loyal. There are a number of reasons why this might be the case. Many metrology brands have been around for decades. Like family loyalty to a particular type of car, many businesses, families, and individuals tend to return to a metrology brand they have used before and trust. The main feature of brand loyalty that is seen in the field of metrology is that higher quality, higher cost brands tend to have a greater number of customers who return again and again. This trend is likely due to less brand loyal customers jumping around from brand to brand in search of the lowest price for what they need. Those customers who are brand loyal trust their brand of choice because of their history of top quality, and they are willing to pay whatever price to be able to hold onto that trust.
The Unified Thread System is a standardized system adopted by the United States, Canada, and Great Britain that unifies the thread specification of different screw sizes. The TPI is included in these specifications along with the coarseness or fineness of the thread. In fact, the level of coarseness and fineness of the individual threads directly impact the TPI. A course thread will result in a lower TPI while a fine thread will result in a higher TPI. The individual specifications included in the United Screw Thread System include: UNC, which stands for a course thread, UNF, which stands for a fine thread, UNEF, which stands for an extra fine thread, and UNS, which stands for a unified special thread.

Vermont Gage maintains a highly-regarded quality policy for all that they do. The main goal of this policy is to achieve and even exceed the satisfaction of each individual customer. Vermont Gage vows to provide both services and products that meet agreed-upon specifications and are delivered in a timely manner. Additionally, the quality policy covers speedy and responsive customer service. Through a company-wide commitment to a constant focus on improvement, Vermont Gage uses its quality policy to focus on teamwork, empowerment, and quality. The implementation of the policy occurs under the quality management system through the ISO 9001-2008 certification, as well as through the ISO 13485:2003 certification that covers all medical device quality management.

A ball-tipped probe is most often used to assess the flatness of a surface, also known as scanning. By using a ruby ball probe, you are harnessing each of the advantages of ruby as a material—sphericity, hardness, smoothness, and resistance. Scanning is used in order to identify any flaws that a material might have. A ruby ball probe is used to measure the individual imperfections that are found during the scanning process. By running the probe across the surface of interest, you can find and measure the size of any flaws that exist. Ensuring smoothness and perfect sphericity of the ball on your probe is pivotal to successful scanning. Ruby is the best choice for this purpose since it is reliably spherical and smooth, as well as difficult to damage.
Phase II engineers pride themselves on the high-end top-quality products that they sell. They sell an incredibly variety of supplies, tools, and parts. Anything you might need for your metrology project, they have. Some of the items they sell include: shop supplies, cutting tools, precision measuring tools, optical instruments, vibration meters, force gages, durometers, coating thickness gages, ultrasonic thickness gages, surface roughness testers, hardness testers, machine tool accessories, and much more. Anything they do not carry themselves, Phase II can provide global outsourcing contract manufacturing to get you what you need.

Right from their website, Vermont Gage offers a 120-page catalogue full of their amazing products. They sell plain plug gages including Class ZZ and Class X standards, as we as custom reversible, taperlocks, trilocks, and progressives. Vermont gage sells plain ring gages, maters, hole location gages, threat gages, and blanks. In addition to this, Vermont Gage has a wide selection of precision measurement accessories including gage handles, gage holders, bushings, boxes, and inserts. Beyond all of these top-notch supplies, Vermont Gage also offers common services to customers. The services offered include: calibrations, measurement conflict resolution, depth notches and pressure relief flats, and gage fact sheets. Contact Vermont Gage for a custom quote today.

The IP rating, or protection level, that you need will vary from job to job. What is most important is knowing the context you will be using your gage in and then deciding the degree to which you require protection, and from what specifically you want to protect your gage. Some precision measurement contexts will involve high pressure water tools and you will want a higher number IP rating to account for this. However, others might involve no risk of water being nearby, but be in a setting with a great deal of construction that will lead to accumulated dust. You will need to focus on a higher first digit in your IP rating for this purpose. Finally, there is a certain amount of protection that you can strive for concerning potential risks that may or may not happen. For example, there might not be water directly in the vicinity, but there might be a sink nearby that runs the risk of overflowing with regular use. Alternatively, the area where your gage will be used might not be scheduled for regular cleanings, or not be cleaned until the end of the project, so you will want to account for potential dust build up. There are many moving pieces to each precision measurement context, and you will want to know the specific risks you have to determine the best IP rating.
Depending on the available tools at your disposal and the budget you are working with there are a number of different ways in which to set your new bore gage to a calibration standard. One of the best ways to do so involves the use of setting rings. However, using setting rings can be an expensive process and typically involves the purchase of multiple sets due to the limited range of each one. An alternative method is to use a micrometer as your bore gauge calibration standard. Most metrologists will have a micrometer around, making this a convenient option. A third method involves purchasing a bore gage setting master kit, like that offered by Fowler. These kits may be expensive, but you definitely get more bang for your buck and will be set for any bore gauge calibration procedure you need to conduct. Finally, some users just sent out their bore gage for calibration, but this can be time consuming and comes at a higher cost.
As a world leader in supplying solutions in electronic inclination measurement, inclination sensors, measurement software, and precision spirit levels, Wyler has furthered their outreach with the publication of a precision measurement book. Titled, “The Secrets of Inclination Measurement,” the Wyler book discusses the niche position that inclination measurement holds within the greater field of metrology. As such a specialized subset of the precision measurement world, inclination measurement is not very well understood or advocated for. Highlighting the implementation and interpretation requirements for quality improvement, the Wyler book explains the range of measurement tools, the importance of precise alignment, and the high performance of machine components important in assembly.
The main qualities that you will want to consider when deciding on what material gage blocks to purchase include dimensional stability, accuracy, thermal conductivity, and hardness. Dimensional stability refers to how much a material changes in size over time. Through use and environmental changes, some materials are more susceptible to changes than others. Accuracy is the degree to which a material can be made more precise through flatness, parallelism, and the finish on the surface. Thermal conductivity relates to the coefficient of expansion of a material and refers to the ability of a material to move to the same temperature of another material. This is important, for various industrial parts will come with their own coefficients of expansion. Finally, hardness is the quantitative degree of resistance of a particular material. Depending on its grade of hardness, a material will be more or less resistant to wear or abrasion.

The Fowler zCat DCC CMM is the top notch CMM device available in the field of precision measurement today. The most distinguishing feature is its portability. The Fowler zCat weighs only 30lbs and runs on the included 10.8-volt lithium battery for up to 4 hours. Unlike any other CMM available, these features make it simple for you to bring your zCat to any part that needs to be measured rather than having to bring the part to the CMM. Additionally, the entire design of the Fowler zCat was created with the user in mind. Intended to be simple to use, the zCat has intuitive controls and a basic interface. Easily switched from computerized to manual, the zCat offers the best of both worlds for anyone that needs both functionalities. Finally, the Fowler zCat comes built with ControlCAT software, a specialized programming software made just for the zCat that is simple to use and incredibly precise.

Micrometers are certainly built to last, but that does not mean that you should skip these quick and simple steps to make them last even longer. First and foremost, take care to not drop your micrometer, or slam it down on any surface. This could impact its measurement accuracy. If you do accidentally drop it, make sure to recheck the calibration before using it for measurements. Another important habit to develop is to wipe down your micrometer on a regular basis. Particularly, you want to wipe the measurement faces in order to ensure that no dirt or build up impacts your measurement. Use a dry, lint-free cloth to do this. Also using a lint-free cloth, wipe your micrometer with a very small amount of oil after long periods of non-use or storage. This will help to avoid the build up of rust or other corrosive mater. When storing your micrometer, keep it in a place that is as close to room temperature as possible, with as low humidity as possible. This will help prevent warping of any sort. Finally, when your micrometer is not in use leave a gap between the anvil face and the spindle face. Prolonged contact between the two faces could lead to a less accurate measurement.

Finding reference tables containing the specific Coefficient of Thermal Expansion (CTE) for various materials is not difficult. However, there are two important features to remember about the principles of the effects of temperature on materials when utilizing these resources. First, there is no way to account for a guaranteed amount of uncertainty that is built into these tables. The original measurements used likely had a certain degree of human and machine error, and there is a natural discrepancy of CTE even between different pieces of the same material (even from the same manufacturer!). Second, the reference tables for CTE that you will find more often than not report a range of temperatures for which a specific CTE applies. This is somewhat unreliable should you be taking a measurement at a very precise temperature. While the CTE reference tables are a great resource, it is important to keep these warnings in mind when using the values for precision measurement.
A major benefit of laser scan micrometers is how versatile they are in terms of types of measurements they are able to complete. Due to this versatility, there are a range of measurements that fall under the domain of laser scan micrometers. These include, but are not limited to, in-line glass fiber or fine wire diameter, outer diameter and roundness of cylinders, thickness of film and sheet, gaps between rollers, film sheet thickness, taper and form, outer diameter of optical connector and ferrule, outer diameter of opaque or transparent cylinders, X- and Y-axis electric cables and fibers, spacing of IC chip leads, disk head movement, and tape width. Additionally, laser scan micrometers can be used in pairs, thus serving as a dual system for measuring a larger outside diameter of a part or object.
Wyler goes above and beyond just the creation and distribution of precision measurement products. They also offer customer training opportunities and a range of helpful services. Wyler understands how complex accurate and reliable precision measurement can be. Therefore, they offer their customers product training opportunities to help guarantee that measurements are done properly. Together with their distribution partners worldwide, Wyler offers trainings at their partners’ facilities or on-site with customers. The aims of these trainings are to teach the correct application of the tools and software and to get used to various measurement methods available. In addition to these trainings, Wyler offers repair services, maintenance contracts, and warranty extensions.
The MIN, MAX, and DELTA (or TIR) measurements are important for ensuring that the part you have made is precise enough to function properly. If you are building a part that will need to work as just one piece of a bigger mechanism, then you will need that part to be the correct shape with the correct surface structure. Using an indicator to measure the MIN, MAX, and then the corresponding TIR will help you to do this. For example, if you are building an axle that will be used in a bigger machine that produces parts for space shuttles, you need that axle to fit precisely where it needs to in the bigger machine. Additionally, you want to ensure that over time, the surface of that axle wears evenly rather than unevenly, as uneven wear might disrupt the functioning of the machine and the corresponding parts it produces.

A man named William Gascoigne invented the very first micrometer in the 1600s. This micrometer was used to measure the distance between stars through a telescope, and to estimate the size of various celestial objects. Later, in the 1800s, Henry Maudslay upgraded the micrometer to a version built for mechanical use. This tool was made to be durable as well as accurate. Then, later in the 19th century, Jean Palmer created a handheld version of the micrometer, making it much more accessible and popular in industrial fields. The micrometer at the time represented an excellent pairing of technology and science. Today, the micrometer remains one of the most important tools in the industrial world, having many applications and reporting consistent and trusted measurements.

Both accuracy and precision are equally important in order to have the highest quality measurement attainable. For a set of measurements to be precise, there is no requirement that they are accurate at all. This happens because as long as a series of measurements are grouped together in value, then they are precise. However, there is no rule that the value they are grouped around needs to be close to the true value of the item being measured. Because of this, sometimes accuracy is valued over precision, simply because it can be more useful in determining the needed value. However, when maintaining a measurement system, the system must be checked regularly for both accuracy and precision, since they are both equally important for measurement success.

Gage calibration can be done by the owner or facility manager him or herself, it can be outsourced to a commercial calibration service, or it can be done by the original manufacturer who built the gage. There are pros and cons to each. Doing the calibration in-house can be a huge investment to set up the facilities, but can also save time and money. Outsourcing can guarantee that specialists complete the calibration, but can lead to long turnaround time. Going back to the manufacturer ensures that the gage is in the same setting it was originally built and tested in, but can also add to the time or cost of moving the machine. Usually, gage owners will use a mix of these three options dependent upon the work that needs to be done and the speed with which it needs to be done.
Trimos is a dimensional measurement company based in Renens, Switzerland. Since its founding in 1972, Trimos has put quality at the heart of its measurement device production and distribution. Building within three central groupings, Trimos specializes at making products that get the job done. The product groups include height gauges, horizontal measuring instruments, and surface measuring instruments. Higher Precision is proud to collaborate with Trimos because of the opportunities they provide to our customers. One of the worldwide leaders in precision measurement instruments, Trimos uses innovative technology to make the best tools. Additionally, Trimos offers a number of services beyond tool production itself including: trainings, after-sale services, troubleshooting, repairs, hardware, software, and tool replacement.
Essentially, the total indicator reading (TIR) and the full indicator movement (FIM) measurements are different names for the same output. Both of these terms are assessing the degree of difference between the highest and the lowest point on the surface of a part. The subtle difference between them is that TIR relies on the readout of MIN and MAX from an indicator, whereas FIM relies on the zero cosine error and thus provides a slightly more accurate depiction of the actual movement of the indicator along the surface of the part. Both of these terms refer to the discrepancy along surface smoothness and shape, and can be used for similar purposes. The biggest reason that both terms exist is likely a delay in updating both professionals and materials. Most engineers today were educated using the term TIR and the majority of paperwork in the field still uses TIR terminology. FIM is a newer term and will take some time to become the standard in the field.

Gage R & R studies are vital to determining the amount of variability within a measurement system. Knowing the magnitude of the variability within a production line allows you to ensure that your measurement system is running smoothly and producing accurate results. In the world of precision measurement, exactness is everything. Should you find after completing a gage R & R study that the variability is too large, you would know for sure that you could not use your system as it is, and that you need to adjust it in some way. Knowing that there is an issue is the first step to fixing it, and making you a better manufacturer. Constant vigilance with the accuracy of your measurements can be accomplished using regular gage R & R studies.

What metrology brings to a business concerning cost is precision and quality for the right price. Metrology helps a company to determine what is required for the highest quality product without overspending on unnecessary steps. A well thought out production plan will be interlaced with measurement. The balance that most businesses strive for between cost and quality is complex. Using metrology techniques and standards makes it a bit simpler. In this day and age, production is such a speedy process that it is hard to be at the top in any field. However, measurement science helps to go beyond quantity in order to perfect quality.
Temperature is extremely important in the field of metrology. From minor measurements to determine the length of a car part, to major measurement projects like building a piece of an aircraft, the effects of temperature on material must absolutely be understood and accounted for in every measurement. Depending on whether a measured material will be exposed to an increase or decrease in temperature, the material will experience some degree of expansion or shrinkage, respectively. When you are measuring the material you will use to build a part, or measuring a final product, you must account for variances in temperature that naturally occur between the lab, the workshop, and the real world. In a field such as metrology, exact precision is everything. If you are going to get precise measurements, you must fully understand the role of temperature.
An IP rating is an extremely important factor to consider when purchasing a gage. While there are circumstances where the precision measurement environment you will use the gage in is relatively controlled, you always want to know the degree to which your tool is protected. There will be a variety of needs for protection, and you will not necessarily require the highest level. However, knowing what level of protection you do have available can save you time and money. There are a number of different and unexpected circumstances that can happen to a tool when it is in use. Perhaps you need your gage for factory work and you know that the climate is controlled and clean, and there should be no risk of dust or water in the area. However, what if a pipe bursts in the wall of the factory, or someone forgets protocol and brings in dust particles from another project. While you cannot protect against every possible scenario, you will want to use the IP rating of your gage to your advantage to determine what level of protection is necessary.
Fowler High Precision is a company that is run on genuineness, innovation, and quality. When they decided to put a lifetime warranty on some of their products, it was most important that they knew which products deserved such a no nonsense label. After extensive research and testing, Fowler chose the products covered by the new lifetime warranty with confidence. Precision measurement tools undergo a normal amount of wear and tear overtime. With this in mind, Fowler wanted to emphasize the importance of the quality in their products and are doing so by offering a lifetime warranty on a particular subset. Keep an eye out for new developments on what might be backed with a lifetime warranty in the future!
Knowing the tolerance of your gage blocks, or their grade, is an important tool to simplify the process of using them. Essentially, the tolerance is a way in which to classify how accurate your gage blocks will be. When calibrating a fixed gage, you might normally need to know the tolerance to stay within the required accuracy. The grade, or tolerance level, of your set of gage blocks helps to standardize this process and ensure that the µm is where you need it to be in order to perform the calibration. This eliminates the need to calibrate the length of the block stack from the calibration report. Various grades, or tolerances, are used for various calibration and precision measurement purposes, but as long as you know the tolerance of your gage blocks, you are at an advantage.
One of Phase II’s best services is their global outsourcing contract manufacturing. They have two state-of-the-art offices in China that are connected to the best factories. Over 25 years of experience in outsourcing contract manufacturing has taught Phase II how to do it well. They can source, produce, and ship any product no matter the needed material, specifications, or tolerances. There are a number of reasons why working with a company that specializes in outsourcing is useful and many reasons why outsourcing products is a good idea in general. First, outsourcing allows you to maintain and even elevate your position in the marketplace. You can stay ahead of the competition with the additional resources provided, guaranteeing a world-class level of quality. Second, outsourcing products extensively decreases your setup costs. Phase II will save you time and money in arranging a separate production line by producing a quality product at 50-80% lower cost than standard retail prices. Third, outsourcing provides connections that garner incredible technological advances. By partnering with the leading engineering universities in Asia, Phase II is associated with a highly skilled talent pool with access to the latest advances in technology, including hardware, software, and automation.
Live Chat
Cart Summary