Calibration of test blocks
Primary calibration of hardness test blocks is carried out at the completion of the manufacturing process. For all test blocks a "Calibration certificate" of the established form is issued, which is included into the test block delivery set.
Calibration of reference hardness test blocks is performed by VNIIFTRI - the National Metrological Institute of Russia.
Reference hardness test blocks of MET series are registered in State Registers of Measuring Equipment of Russia, Byelorussia, Ukraine and Kazakhstan.
Centre "лер" has a license for the production of reference hardness test blocks.