Charles Wathen
Involved - Posts
TAR or TUR?
I've been reading a bit on TUR (test uncertainty ratio) and came across another one called TAR (test accuracy ratio). Can someone explain the difference between the two?
I'm in the process of modifying my calibraiton procedure to include an Accuracy Ratio. For example: if we are calibrating a Mitutoyo Digimatic Thickness Gage with an accuracy of ±.0001", and I'm using grade 2 jo blocks, the accuracy ratio is 25:1 @0.000004" and 10:1 @0.000010". The 4 and 10 millionths would be the maximum error of the gage block. Would this "accuracy ratio" be also called a TAR or a TUR?
I've been reading a bit on TUR (test uncertainty ratio) and came across another one called TAR (test accuracy ratio). Can someone explain the difference between the two?
I'm in the process of modifying my calibraiton procedure to include an Accuracy Ratio. For example: if we are calibrating a Mitutoyo Digimatic Thickness Gage with an accuracy of ±.0001", and I'm using grade 2 jo blocks, the accuracy ratio is 25:1 @0.000004" and 10:1 @0.000010". The 4 and 10 millionths would be the maximum error of the gage block. Would this "accuracy ratio" be also called a TAR or a TUR?