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 64926, Scotch-Brite Hand Pad 7447 PRO, PO-HP, A/O Very Fine, 6 in x 9 in, 7100023339, 20/Carton
Insize 3101-225E, DIGITAL OUTSIDE MICROMETER, IP65, 8-9"/200-225mm, 6928640326868
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 14750, Scotch-Brite EXL Unitized Wheel, XL-UW, 2S Fine, 3 in x 1/4 in x 3/8 in, 7000000699
3M 35832, Hookit Dust Extraction Flexible Radius Sanding Block, 273 mm x 66 mm, 7100256499
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 05508, Marine Adhesive Sealant 4000 UV, White, 600 mL Sausage Pack, 7010330455, 12/Case
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 26140, PPS Series 2.0 Adapter, Type S45, 1/4 Female, 19 Thread BSP, 7100135336
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
3M 23897, Cloth Belt 777F, 60 YF-weight, 1 in x 18 in, Fabri-lok, Full-flex, 7010307894, 200 per case
3M 26127, PPS Series 2.0 Adapter, Type S31, 1/8 Male, 28 Thread BSP, 7100135953
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
3M 53914, Performance Plus Duct Tape 8979N Nuclear Red, 48 mm x 54.8 m 12.1 mil, 7000049014, 24/ case
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
3M 05520, Sanding Block, Rubber, 2-3/4 in x 8 in, 7000028366
3M 16831, Urethane Seam Sealer, 08361, Gray, 310 mL Foil Pack, 7000120461, 6 per case
3M 03140, General Purpose Sanding Sponge CP041-6P, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Medium, 7100101537, 6/pack 