... scale (HV30, HV100)Usage RangeHardened and surface hardened steel, hard alloy steel, casting parts, non-ferrous metals, various ... 5%, 50-60 HzCarried standardGB/T230.2(Rockwell), GB/T231.2(Brinell), GB/T4340.2(Vickers)JJG112(Rockwell), JJG150(Brinell), ... Standard accessoriesRockwell indenter, Vickers indenter, Diameter 1.5875, 2.5, 5mm hard alloy steel ball indenter, measuring microscope, objective, ...