FIELD: measurement technology. SUBSTANCE: method includes contact action by indenter having flat working surface with fixed force on surface of article or sample and evaluation of hardness by characteristic size of deformed zone around contact. Characteristic size of zone around contact is found after removal of load or during action by indenter of cylindrical shape. Method of holographic interferometry is used to determined characteristic size of deformed zone around contact. EFFECT: increased authenticity. 3 cl, 2 dwg, 1 tbl
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