This tester is a popular type Rockwell hardness testing machine, with its novel appearance and eased operate,the features beautiful, the construction is firm and reliable, the operation is convenient, This Rockwell hardness tester that IS moving to add to unload to experiment the dint of a kind of universal type account. That degree of hardness accounts to be applicable to the black metals and have the Rockwell surname degree of hardness measurement of the color metals.It is extensive to be applicable to factory car with calculate the section. ________________________________________ Specifications Preliminary test force 98N Total test force(N)588,980,1471N Total test force dwell time(s) 1-30 Hardness Indication Digital Max height of speciments(mm) 170 Distance from Indeneter's center to OuterWall 140mm Machine Size(DXWXH)(mm) 463 ?41?60 Weight(kg) 75 Degree of hardness test seope HRA 20～88 HRB 2-100 HRC 20-70