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 ISM-MTM-OB100X, OBJECTIVE, PL100X (dry type), 6928640323225
3M 05068, Cubitron II Stikit Film Disc 775L, 400+, 5 in x NH, Linered w/Tab, Die 500X, 7100145364, 250 per case
3M 37718, Solvent Spray Nozzle Trigger Head, 7100006246
Standard Abrasives 42505, A/O Flexible Flap Wheel 612425, 1-1/2 in x 1 in x 1/4 in 60, 7010367715, 10 per case
3M 22395, Roloc Disc 361F, 60 YF-weight, TR, 3 in, Die R300V, 7000045098
Dynabrade 15324 1" W x 2" L Hard Platen Pad 5-Pkg.
3M 20930, PSA Cloth Disc 348D, P120 X-weight, 1 in x NH, Die 100N, 7000118916
3M 26137, PPS Series 2.0 Adapter, Type S41, Trapezoidal Thread - QCC, 7100135947
3M 37024, Extra Large Drywall Sanding Sponge 910-DDA, Dual Angle, 2-1/2 in x 8 in x 1 in, Fine, 7010375249 