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 1120-500, DIGITAL INSIDE GROOVE CALIPER, 1.57-20"/40-500mm, 6940561961034
3M 03126, General Purpose Sanding Sponge CP040-6P, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100101532, 6/pack
3M 06147, Scotch Electrical Moisture Sealant Roll 06147, 2-1/2 in x 10 ft, Black,1 roll/carton, 10 rolls/Case, 7000005872
3M 58598, Scotch Electrical Moisture Sealant Pad 06149, 2-1/2 in x 2-1/2 in,Black,10 pads/carton, 250 pads/case, 7000006236
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
Standard Abrasives 707508, A/O Tapered Cone Point, K-110 100, 7100166521, 100 per case
Standard Abrasives 713297, Aluminum Oxide Handy Roll, P120 J-weight, 2 in x 50 yd, 7100031623
3M 91004, Drywall Sanding Sponge CP-042-4PK, Single Angle, 4-7/8 in x 2-7/8 in x 1 in, Fine, 7100111452, 4/pack 