Accuracy: ?2″.
To inspect protractor, taper gage, index plate, index head and goniometer, can also be used to set angle.
Made of special alloy steel, hardness HRC64, high stability, wear resistance and easy combination.
Can be combined to any angle with interval 6 seconds after combination (6″, 12″, 18″, … , 360?).

Insize 2443-E60, BORE GAGE, 1.378-2.362", 6940561981124
Dynabrade 21432 ND220, Vane 5/Pack
Dynabrade 90411 1/8" W x 24" L 220 Grit A/O DynaCut Belt, 50/pack
3M 91004, Drywall Sanding Sponge CP-042-4PK, Single Angle, 4-7/8 in x 2-7/8 in x 1 in, Fine, 7100111452, 4/pack 