3M 13627, 947, Hookit Disc Pad Holder, 7 in x 1 in x 5/8 in 5/8-11 Internal, 7000028353 
Insize 4797-300, PROTRACTOR, 11.8×23.6″, 10-170?, 6928640317484
$147.30
Graduation 1?
Made of carbon steel.
Satin chrome plated.
With clamping screw.
The blade is moveable.
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