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 4807, ANGLE GAGE SET, 6928640319341
Dynabrade 78290 2" Dia. x 2S Fine, Type R Unitized Locking-Type Disc, 25/pack
Dynabrade 78402 2" Dia. x 1/2", Dyna Premium Rapid Strip TR Disc, 25/pack
Dynabrade 77769 5" Dia. x 7/8" Center Holes, 80 Grit, Z/A, Type 27, DynaCut Flap Disc w/Fiberglass, 10/pack
Dynabrade 78127 3" Dia. Medium NWN VT DynaBrite Locking-Type Disc, 25/pack
3M 07053, General Purpose Sanding Sponge CP040-12-CC, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100101245 