3M 28476, Disc pad Hub, 2-1/2 in 5/8-11 Internal Low Profile, 7000045288 
3M 45095, Roloc Disc Pad TR, Medium 2 in 1/4-20 Internal, 7000045282 
Insize ISHW-B70, WEBSTER HARDNESS TESTER, 6928640325458
$3,577.10
Application for hard aluminum alloy and hard brass. Hardness range 0 ~ 20HW. Min. reading 1HW.
Accuracy ?0.5HW (at 5 ~ 17HW).
To measure the hardness of soft metal such as aluminum alloy, copper, brass, soft steel, etc.
According to ASTM B647-84 (2000).
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