The American Society of Mechanical Engineers (ASME) has published a new standard that identifies elements that will impact measurement uncertainty from thread calibration processes. Standard B1.25 is titled, ‘Measurement Uncertainty Factors in the Calibration of Screw Thread Gages’ and in the interests of full disclosure, be advised that I chaired the committee that prepared it.
At the outset, the committee agreed that it would focus on the metrology involved in thread gage calibration and leave acceptance criteria and other quality considerations to other standards available from ASME.