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 93949, General Purpose Sanding Sponge CP040-3PK, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100175194, 3/pack
3M 09321, Adhesive Backed Discs 9321NA, 5 in, 8 Hole 5 pack Medium 80 Grit, 7010311043
Norton 66261127733 - 2" X 50 Yard 60 Grit Metalite™ Aluminum Oxide Cloth Roll, 1 Each
3M 88741, Hookit Center Water Feed Disc Hand Pad, 2 in x 5/8 in, 7000045712
Dynabrade 91426 1/4" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
3M 27468, EMI Copper Foil Shielding Tape 1181, 1 in x 18 yd (25,40 mm x 16,5 m), 7000132169
3M 33443, Cubitron II File Belt, 36+, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100033184, 10 belts per carton, 5 cartons per case
3M 97977, Hi-Strength Spray Adhesive 94 ET, Low VOC <20%, Clear, 24 fl oz Can (Net Wt 19.8 oz), 7000121417, 12/Case
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613 