A.E. Aslanyan FSUE “VNIIFTRI”, Mendeleevo, Moscow regionandrey_aslanyan@vniiftri.ru Al’manac of Modern Metrology № 3 (19) 2019, pages 84–90 The article presents the results of international cooperation of VNIIFTRI in the field of hardness measurements. Information on carried out and current comparisons and on work in various international committees is given. Key words: hardness scales, comparisons, COOMET, BIPM, … Continue reading International cooperation of FSUE “VNIIFTRI” in the field of hardness measurements