End of the Line

Accuracy Versus Precision: The Most Important Concept in Quality and Metrology


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As metrology industry experts will agree, it’s surprising how many engineers misunderstand the difference between accuracy and precision. To laypeople, accuracy and precision are synonyms, both descriptors of how close an attribute is to an ideal.

In manufacturing, however, the advent of statistical process control meant that no dimension or attribute is ever considered to be “right” or “wrong.” Attributes that are both accurate and precise file within upper and lower control limits, but it’s possible for a dimension or measured attribute to be highly precise, yet not accurate.

Want to watch this podcast as a video? End of the Line is available on engineering.com TV along with all of our other shows such as This Week in Engineering, Designing the Future, and, Manufacturing the Future.


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End of the LineBy Engineering.com