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?).

Standard Abrasives 872199, Quick Change TR A/O Unitized Wheel, 721, 2 in x 1/4 in, 7010368348
3M 19773, Utility Cloth Sheet 314D, 9 in x 11 in P60 X-weight, 7000000360
3M 22399, Roloc Disc 361F, 50 YF-weight, TR, 2 in, Die R200P, 7000028184
3M 27784, Speedglas FA III SAR V-100 Valve and Speedglas Welding Helmet 9100 MP, 27-5702-30iSW, ADF 9100XXi 1EA/CS, 7100194535
Dynabrade 77774 5" Dia. x 7/8" Center Hole, 80 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack
Dynabrade 79108 1/2" W x 12" L 60 Grit DynaCut Premium Ceramic Belts, 50/pack
3M 88903, PSA Cloth Disc 348D, 60 X-weight, 12 in x NH, Die 1200B, 7000118896
Dynabrade X61H 6" (152mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/16" Orbit, Hook-Face
Standard Abrasives 713297, Aluminum Oxide Handy Roll, P120 J-weight, 2 in x 50 yd, 7100031623
3M 33440, Cubitron II File Belt, 33440, 80+, 10 mm x 330 mm (3/8 in x 13 in), 7100033195, 10 belts per carton, 5 cartons per case
3M 20909, PSA Cloth Disc 348D, 80 X-weight, 2 in x NH, Die 200P, 7000118873
3M 65489, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH5120TRI-10T, 5 IN x UH, 120, 7100202877, 10 per pack
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M 64070, Contractor Grade Pro Strength Duct Tape 3979, Silver, 1.88 in x 60 yd, 7010375912
3M 85492, Scotch Foil Tape 3311-10A, 2.0 in x 10 yd (50.8 mm x 9,1 m), 7010383663
3M 26104, PPS Series 2.0 Adapter, Type S20, 1/8 Male, 27 Thread NPSM, 7100135929
3M 07054, General Purpose Sanding Sponge CP041-12-CC, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Medium, 7100101246 