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 1179-1000, DIGITAL RTJ RING GROOVE CALIPER, inside diameter of RTJ ring groove .6-40"/15-1000mm, outside diameter of RTJ ring groove 1.2-40"/30-1000mm, 6928640394409
Dynabrade 97566 1/4" Safety Coupler, Female
Standard Abrasives 710335, A/O Straight Cartridge Roll, 1/4 in x 1 in x 1/8 in 60, 7100080015
Standard Abrasives 701100, A/O Tapered Cone Point, D-40 120, 7010310892, 100 per case
Dynabrade 97568 3/8" NPT Female Safety Coupler
3M 81284, Scotch-Weld High Strength Retaining Compound RT38, Green, 250 mL Bottle, 7010367436, 2/case
Dynabrade 95746 3/8" NPT Speed Regulator
3M 07053, General Purpose Sanding Sponge CP-040NA, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100110752 