Metrology Quality Rules Tur-Tar

In this episode, we are going to talk about some quality rules that are often used in calibration to determine the acceptability of measurement standards or systems. For example, in a past episode of the metrology training lab we discussed the calibration of micrometers and recommended Grade 0 gage blocks saying that they were sufficiently accurate.

What do we mean by sufficiently accurate? What calculations can you make to justify the selection of measurement standards or your calibration providers based on quality.

We are going to discuss two of these common ratios, one being the test accuracy ratio or TAR and the other being the test uncertainty ratio or TUR. Sometimes called the TAR and TUR.

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