True or false: Measuring products, unlike other processes, is not subject to variation.
Of course this statement is false. Variation is inherent to any system, and the system of measuring products is no exception. How well you are measuring products can be assessed. Typically this assessment is done with a Repeatability and Reproducibility (R&R) analysis. One resulting statistic of that analysis is percent R&R, which gives an indication of how well you are measuring—in other words how much variation there is in the measurement system.