3M 80512, Roloc Disc 777F, TR, 2 in x NH, P120 YF-weight, 7000000553 
Insize 4799-1200, PROTRACTOR, 7.9×11.8″ 0-180?, 6928640317422
$68.54
Graduation 1?
Made of stainless steel
Satin chrome plated scale.
With clamping screw.
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