Informative only and is not a mandatory part of the standard. Appendix serves as a historical record of torque proficiency test ending in 2012. Proficiency test was a comprehensive comparison of torque measurements using ASTM E2428 method and validated that the E2428 method is an acceptable practice that aids in providing comparable results, within stated uncertainties, between technically competent calibration service providers.
Keywordstorque cell; torque standard; torque testing machine;
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