Hardness scale: HRA, HRB, HRC, HRD HRF, HRG (with standard indenters); HRE, HRH, HRK (with optional indenter).
Stage elevation manual. Load control automatic. Resolution 0.1HR. Tolearance testing.
Set testing times (2~10) to have average value and the difference of max. and min. value
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

3M 54136, Scotch-Brite Roloc AL Surface Conditioning Disc TR, 2 in x NH A MED, 7100075707, 200 per case
Insize 0010-A35, SOUND LEVEL METER, 35dB~130dB, 6974029777004 