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  Measurement, Test and Calibration
  MSA on Torque Wrench

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Author Topic:   MSA on Torque Wrench
Forum Contributor

Posts: 10
From:Ontario, Canada
Registered: Jan 2001

posted 11 June 2001 08:22 AM     Click Here to See the Profile for TorqueGuy   Click Here to Email TorqueGuy     Edit/Delete Message   Reply w/Quote
I am doing an MSA on a Snap-On torque wrench. It is a simple dial wrench with a range on 20 Nm.

I am using an MS Excell worksheet that I got from the Cove to create a Bias & Linearity Report.

My question is what is the importance on percent bias and percent linearity?

When I look at the numbers all I am concerned with is that the bias of the wrench does not introduce a significant error to the measurement and that the slope indicates that the wrench is linear throughout its measurement range.

Why do I need to see what percent of the bias accounts for the total process variation?

Thank you.

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