... +Aluminum boxpacking size: 42.5*18.0*36.5cmSpecificationsPortable hardness tester R936 Measuring Range (170-960)HLD,(17-68)HRC,(19 ... up,plumb up)Hardness unitHL.HB.HRC.HRA.HV.HSDisplayMatrix LCD(128*64dot)Data storeMax500Operation voltage6V(4*AA battery)Operation time ... : 42.5 x18x36.5 cmPacking weight:5 kg Portable hardness tester AR936 Support HL,HB,HRC,HRA,HV,HS