In light of the new Rockwell C hardness scale definition adopted by National Metrology Institutes (NMIs) , a comparison of the Hardness Rockwell and Superficial- Rockwell scales realized by National primary hardness Rockwell machines is necessary to verify the implementation of the new definition. A Technical Protocol of a Regional Metrological organization Key Comparison (RMO KC) was presented and approved at the t TC 1.6 meeting in September 2014 in Braunschweig, Germany. A Regional Key Comparison (RKC) has been chosen and the technical protocol has been prepared following the rules given by the document “Measurement comparisons in the CIPM MRA” .
Ключові слова: key comparison, hardness, Rockwell scales, National primary standards, reference blocks, measurement area, budget of uncertainty, uncertainty evaluation
Regional metrological organization key comparison in the field of rockwell hardness scales (progress and perspectives),
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