Hardness scale HRA, HRB, HRC, HRD, HRF, HRG, HR15N, HR30N, HR45N, HR15T, HR30T. HR45T
Preliminary test force 29.4N/3kgf for superficial Rockwell 98N/10kgf for Rockwell.
Display analogue. Stage elevation manual.
Load control manual. Min. reading 0.5HR.
Max. workpiece height 6.30″
Max. workpiece depth 5.51″(from the center of indenter).

Dynabrade 11072 Contact Wheel Ass'y, 7/16" Dia. x 1/8" W x 3/8" I.D., Crown Face, Brass 
