Hardness tester is a special instrument used to measure the surface hardness of materials. Hardness scoring for desktop hardness tester, portable hardness tester two, desktop hardness tester is mainly used for experimental use, with the advantage of high precision, portable hardness tester is suitable for installed mechanical or permanent assembly parts, easy to carry. Portable hardness tester set Richter, Brinell, Rockwell and other portable hardness tester in one, can achieve 7 different hardness values of the free conversion, to eliminate the previous hardness tester need to manually find the hardness table for tedious procedures, to achieve the real sense of intelligent, portable characteristics.