INSIZE Digital Rockwell Hardness Tester Rockwell HRC & HRB Features include... Tolerance Testing Set testing times (2-10) to have an average value and the difference of Max-Min Convert to other Rockwell scales, HV or HB Memory of 500 testing values for browsing and output Testing value can be sent to wireless printer automatically Calibration function compensates the testing value for high accuracy Auto power off Includes the following... Main Unit 2.36" Diameter Flat Anvil 5.91" Diameter Flat Anvil V-Type Anvil Diamond Indenter 1/16" Diameter Carbide Ball Indenter Hardness Test Block HRB88-95 Hardness Test Block HRC60-65 Hardness Test Block HRC20-30 Anti Dust Cover Software & USB Cable AC Adapter