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 2103-50E, DIGITAL INDICATOR (advanced model), 2"/50.8mm, lug back, 6928640329432
Dynabrade 94960 1/4" Composite-Style Coupler, 1/4" Female
3M 76630, Roloc Disc 777F, 50 YF-weight, TR, 2 in, Die R200P, 7000045627
3M 05067, Cubitron II Stikit Film Disc 775L, 400+, 6 in x NH, Linered w/Tab, Die 600Z, 7100145474, 250 per case
3M 77579, Cubitron ll Cloth Belt 784F, 36+ YF-weight, 1/2 in x 24 in, Fabri-lok 45 Angle, Single-flex, 7100232690, 200 per case 