... external testing.2.Advanced Digital Rockwell Hardness Tester Testing on Surfaces difficult to reach. Testing ... measuring range with 15 Rockwell scales.6. The tester is suitable for testing of carbon steel, ... iron, non ferrous metal, and engineering plastic etc.7. Automatic load cycle. The loading, dwell, unloading ... HB, HV, HLD, HK and σb value.10. The tester meeting all the following standard such as ...