... of IC, thin plastics, metals thin slice . HBRVU-187.5 Brinell, Rockwell & Vickers Optical Hardness Tester with numerous testing forces ... .5 Rockwell ScalesTesting ForceHRA, HRB, HRC, HRF,HRG60Kg (588N),100Kg (980.7N),150Kg(1471N)Vickers ScalesTesting ForceHBW2.5/31.25,HBW2.5/62.5 ... ,HBW5/62.5, HBW2.5/187.5306.5N(31.25Kg),612.9N(62.5Kg ...