... Wide measuring range. 3.With EL background light. Portable Leeb Hardness TesterTechnical Specifications:Error and repeatability of displayed value No.Type ... of impact deviceHardness value of hardness blockError of displayed valueRepeatability1D760±30HLD530±40HLD±6 HLD±10 ... 100)HS,(59-85)HRA,(13-100)HRBMeasuring direction:360°Hardness Scale:HL,HB,HRB,HRC,HRA,HV,HSDisplay:dot ...