What are the advantages of using an optical comparator? 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.