Measurement Accuracy: What You Need to Know

摘要

A look at the evolving meaning of measurement accuracy, and how published accuracy standards can help you evaluate metrology devices-but only to a point. It's an old challenge: You're a manufacturer whose customer needs you to assure that the part you've contracted to make for them will be held to specified tolerances. So, what's the best method for making sure the part is within spec? The question is not only how to measure the part-a CMM touch probe, or a laser scanner?-but also how to evaluate measurement quality. To find the most accurate way to measure your part, you need to understand the uncertainty inherent in any given measurement system.