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 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
3M 85653, Thermosetable Glass Cloth Tape 3650, White, 5 in x 60 yd, 8.3 mil, 7010334203
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
Dynabrade 92585 3-1/2" Dia. x Medium Hook-Face Surface Conditioning DynaBrite Disc, 10/pack
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
3M 43474, Glass Cloth Tape 3615, White, 1 in x 36 yd, 7 mil, 7000048876
3M 03027, Scotch General Purpose Cloth Duct Tape 393, Silver, 48 mm x 54.8 m, 12 mil, 7000048964
3M 92057, Vinyl Duct Tape 3903, Yellow, 3 in x 50 yd, 6.5 mil, 7010378167
3M 50019, Venture Tape Metallized Cloth Duct Tape 1502, Silver, 72 mm x 55 m (2.83 in x 60.1 yd), 7010296281
3M 98534, Premium Matte Cloth (Gaffers) Tape GT3, Black, 72 mm x 50 m, 11 mil, 7010291525
Standard Abrasives 78523, Ceramic Pro Type 29 Flap Disc, 645129, 4-1/2 in x 5/8-11 80 Y-weight, 7010310620, 10 per case
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 
