... )HLD,(17-68)HRC,(19-651)HB,(80-976)HV,(30-100)HS,(59-85)HRA,(13-100)HRBTest directionSupport 360(plumb down ... ,down,horizontal,inclined up,plumb up)Hardness unitHL.HB.HRC ... cmPacking weight:5 kg Portable hardness tester AR936 Support HL,HB,HRC,HRA,HV,HS