Magnetic Hardness Tester ISO 6508 ASTM E18 Scales HRA HRB HRC HRD HRF HRG Measuring Range 20 to 650HBW Resolution 1 HR Magnification 40X Indenter Ball Diamond Features Lifting Handle Load/Unload Hand Wheel Magnetic Force Switch Includes Flat Anvil for Test Block Hardness Test Block Magnifier with Led Measuring Microscope Supports for Cylinder Or Tube Workpieces