... test Brinell, Rockwell and Vickers hardness of ferrous, non-ferrous metal & hard alloy. BRINELL ROCKELL VICKERS HARDNESS TESTER MODEL HBRV-187.5 BRINELL ROCKWELL ... .7, 1471, 1839N (30, 31.25, 60, 62.5, 100, 150, 187.5kgf)Max. height of test piece: 200mmDepth of throat ... .7, 1471, 1839N (30, 31.25, 60, 62.5, 100, 150, 187.5kgf)Magnification of microscope: 37.5X, 75XMax. height of ...