Why is repeatability important? Repeatability is simple in concept, but complexly linked to the overall quality and precision of any manufacturing job. Essentially, repeatability guarantees that you are measuring what you say you are, when you say you are. While the measurement of repeatability itself requires all factors to be held stable, this ensures that when any element is altered, such as the part being measured or cut, that the process itself is remaining the same. When mass producing car parts, every car that is ultimately built needs to be made up of identical pieces in order to function well and safely. By having a repeatable measurement process in place in production, you are guaranteeing that what you are producing is identical in quality. In this way, the repeatability of the smallest measurement in this process can have important effects all the way up the final outcome.