Power supply : 220V / 50Hz Time delayed control : 0 - 60 seconds (adjustable) The distance from the indentor center to the instrument body : 165mm Dimensions : 520 x 240 x 740mm Weight : 80kg Rockwell Hardness Initial testing force : 10 and 60kg tolerance : 2 Total testing force : 100 and 150kg tolerance : 1Indentor : Diamond rockwell 1,588mm ball indentor Scales : HRA, HRBW, HRC, HRD Max. height of samples : 185mm Brinnel Hardness Testing force : 30, 31.25,62.5,100,187.5kg tolerance : 1 Indentor :2.5mm and 5mm ball indentor Scales : HBW1/30 HBW2.5/31.25 HBW2,5/62,5 HBW5/62,5 HBW10/100 HBW2,5/187,5 Eyepiece magnification : 15x Objective : 2,5x (resolution 0,5Pm) 5x (resolution 0,25Pm) Max. height of samples : 100mm Vickers Hardness Testing force : 30 and 100kg tolerance : 1 Indentor : Diamond Vickers Scales : HV30 and HV100 Eyepiece magnification : 15x Objective : 5x (resolution : 0,25Pm) Max. height of samples : 115mm