Convertible all hardness standards (HL, HB, HRB, HRC, HRA, HV,HS), without calculation. Measuring range:(170-960)HLD,(17-68.5)HRC,(19-651)HB,(80-976)HV, (30-100)HS, (59-85)HRA, (13-100)HRB. Outline dimension: 125*71*27mm