Dynabrade 94993 1/4" Male Composite-Style Coupler with 1/4" Female Plug Assembly 
3M 26135, PPS Series 2.0 Adapter, Type S40, Trapezoidal Thread, 7100135335 
Insize ISHW-L20B, WEBSTER HARDNESS TESTER, 6928640325441
$4,298.14
Application for aluminum alloy small tube. 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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