... Wide measuring range. It can measure the hardness of all metallic materials. Direct display of hardness scales HRB, HRC, HV, HB, HS ... Specifications:Error and repeatability of displayed value No.Type of impact deviceHardness value of hardness blockError of displayed valueRepeatability1D760+-30HLD530+-40HLD ... HRA, (13-100)HRB 2. Measuring direction: 360° 3. Hardness Scale: HL, HB, HRB, HRC, HRA, HV, HS ...