MH310 portable Hardness tester 1.Hardness Scale:HL,HB,HRB,HRC,HRA,HV,HS 2.Display:dot matrix LCD,128*64 dots MH310 portable Hardness testerTechnical Specifications:Error and repeatability of displayed value: No.Type of impact deviceHardness value of Leeb standard hardness blockError of displayed valueRepeatability1D760±30HLD530±40HLD±6 HLD±10 HLD6 HLD10 HLD2DC760±30HLDC530±40HLDC±6 HLDC±10 HLDC6 ...