Supplementary comparison on gauge block calibration by mechanical comparison

Project Description

The purpose of this supplementary comparison on gauge block calibration by mechanical comparison is to support new and existing CMC claims for this method. The measurands are ISO 3650:1998 grade K gauge blocks, that are made of steel and have following nominal values: 0.5 mm, 4 mm, 10 mm, 25 mm, 50 mm,100 mm.

In this comparison for each gauge block, deviation of central length from the nominal value and variation in length is to be measured, and the calibration uncertainty is to be evaluated.
For this comparison NPL is acting as a co-pilot.