Indentation Measuring System Scales HB Measuring Range 8 to 650HB Resolution 0.01 mm/0.0004 in Magnification 0.13X 0.18X Indenter Ball Features Automatically Measure The Indentation Calibration with Indentation On Standard Hardness Block Connected to Computer Via USB Port Low and High Limits Result Saved to Excel Automatically Includes Magnetic Anvil Software and Dongle Software CD