... Protable rockwell hardness gauge HZ-2507A Equipment discription:PHR Series Portable Rockwell / Superficial Rockwell hardness tester, is a ... standard GB/T230.2-2004. Rockwell Hardness Tester PHR Series small size, light weight, simple operation, easy to use, ... , sales site and material storage. Rockwell Hardness Tester PHR Series can test from annealing, normalizing, tempering, quenching, quenching ...