Leeb hardness gauge 1.Pass ISO 9001 2.Hardness scale HL, HRC, HRB, HRA, HV, HB, HS 3.Continuous Working time:About 100h Leeb hardness gaugeProduct ModelLeeb hardness tester Technical SpecificationHardness scaleHL, HRC, HRB, HRA, HV, HB, HSMemory240-1000 groups (Impact times:32-1)Tensile strength U.T.S. range374~2652 MPaStandard Impact DeviceDOptional Impact DevicesDC, D+15, G, C, ...