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 91428 1/2" W x 12" L 60 Grit A/O DynaCut Belt, 50/pack
3M 86804, Cubitron II Stikit Film Disc 775L, 80+, 6 in x NH, Linered w/Tab, Die 600Z, 7100045866, 250 per case
Standard Abrasives 875501, Buff and Blend GP Mounted Flap Brush, Medium, 3 in x 2 in x 1/4 in, 7000122218
3M 16199, PPS Disposable Lids, Standard and Large, 125 Micron Full
Diameter Filter, 25 lids per case, 7000119821
3M 40145, Thermosetable Glass Cloth Tape 3650, White, 8.3 mil, 7 in x 60 yd, 7100198501
Insize 0110-1125, ANEMOMETER, 6974029776595
Dynabrade 79202 1/2" W x 12" L Belt Assortment Pak
3M 27712, Cubitron II Roloc Durable Edge Disc 984F, 60+, YF-weight, TSM, Maroon, 1-1/2 in, Die RS150SM, 7000119218, 200 per case
3M 07053, General Purpose Sanding Sponge CP-040NA, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100110752 