3M 45097, Roloc Disc Pad TR, Extra Hard 2 in 1/4-20 Internal, 7000045284 
3M 28476, Disc pad Hub, 2-1/2 in 5/8-11 Internal Low Profile, 7000045288 
Insize 4799-1300, PROTRACTOR, 11.8×19.7″, 0-180?, 6928640317439
$107.44
Graduation 1?
Made of carbon steel
Satin chrome plated scale.
With clamping screw.
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