Accuracy ?4%. Graduation 2.5lb.in.
Square driver 3/4?.
According to DIN ISO 6789, ASME B107.300.
All-metal construction.
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3M 93712, Tri-Flange Probed Test Plugs 393-2011-50, 10 Pair/Bag, 5 Bags EA/Case, 50 EA/Case, 7000128263 