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?).

Dynabrade 50296 5" Dia. Disc Backup Pad, Hard Density, 5/8"-11 Thread
Dynabrade 21432 ND220, Vane 5/Pack
Dynabrade 78006 1/2" W x 12" L Coarse Non-Woven DynaBrite Belts, 10/pack
Dynabrade 11399 Type 27 Wheel Mounting Adapter Kit
Insize 3127-E05, DIGITAL THREE POINTS INTERNAL MICROMETER, .425-.5"/11-13mm, 6928640356292
Dynabrade 90405 1/8" W x 24" L 60 Grit A/O DynaCut Belt, 50/pack
Dynabrade 90370 3/4" W x 34" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 90549 1/2" W x 44" L 120 Grit A/O DynaCut Belt, 50/pack
3M 93949, General Purpose Sanding Sponge CP040-3PK, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100175194, 3/pack 