Tester di durezza Rockwell superficie con apertura pezzo dimensioni 25mmx25mm per metallo
Test ruler: 6 surface Rockwell hardness scales, which can be extended to 15: HR15N 、HR30N 、 HR45N 、 HR15T 、 HR30T 、 HR45T. The weight is only 0.8~1.0 kg, which is convenient for hardness detection in production site.