Plastic Rockwell Hardness Tester 1.Test force:588.4,980.7,1471N (60,100,150kgf) 2.HRA,HRB,HRC,HV,HR15N,HR30N ... ,HR45N,HBW etc 200HRS-150 Digital Display Manual Plastic Rockwell Hardness Tester Applications: ... This 200HRS-150 Digital Display Manual Plastic Rockwell Hardness Tester is a new type ...