... .Horizontal protrudent Indenter Design 2.internal and external testing Advanced Digital Rockwell Hardness Tester1. Horizontal protrudent Indenter Design, suitable also ... as high measuring precision, wide measuring range with 15 Rockwell scales.6. The tester is suitable for testing of carbon steel ... force:588.4N (60kgf), 980.7N (100kgf), 1471N (150kgf)Scales:HRA,HRB,HRC,HRD,HRE,HRF, HRG,HRH,HRK, HRL ...