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?).

3M 01067, Hookit Gold Film Disc 255L, 5 in x NH, D/F 5 HL P80, Die 500FH, 7000119440, 75 discs per box
3M 92158, Sanding Belt, 99260NA, 3 in x 18 in, Fine, 120 grit, 7010369262, 5 per pack
3M 26018, PPS Series 2.0 Adapter, Type S11, 3/8 Male, 18 Thread NPS, 7100135942
Dynabrade 78589 1/4" Dia. x 2" W x 1/8" Center Hole, 120 Grit, 100/pack
3M 16238, PPS Spray Gun Holder, 4 Gun, 7100158720
3M 07056, Drywall Sanding Sponge CP-042, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100101555 