Rockwell Hardness Tester, There are various methods (such as Rockwell, Brinell, and Vickers) for measuring metal hardness. Of these, the simplest and most cost effective is the Rockwell hardness test, which involves applying a specific load on the material using an indenter and measuring how far the indenter penetrates. The Rockwell Hardness test uses a conical diamond or a hard steel ball as an indenter. Initially, a minor load is applied on the metal to be tested. This force is to allow the indenter to penetrate the material surface, thus eliminating any errors causes by surface roughness. An additional major force is then applied for a predetermined period and then reduced to minor load state. The difference in indenter position before and after the application of the major load is measured. This is the permanent deformation caused by the major load. The Rockwell hardness scale, which combines multiple test loads and indenter types, allow the user to judge the hardness of the material using the permanent deformation readings. We are dealing with various type of rockwell hardness tester. Please contact for more details.