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?).

Dynabrade 92765 3" W x 50' L 15 Micron, Diamond Lapping Film DynaCut Roll
Dynabrade 57113 Rotor/Vane Set
Dynabrade 52213 .5 hp 7 Degree Offset Die Grinder, Front Exhaust, Short Shank, 24,000 RPM, 1/4" Collet
Dynabrade 58442 6" Dia. Two-Hand Gear-Driven Sander, Non-Vacuum, Non-Vacuum, .45 HP, 900 RPM, PSA
Insize 3101-200E, DIGITAL OUTSIDE MICROMETER, IP65, 7-8"/175-200mm, 6928640326851
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 80510, Roloc Disc 777F, P120 YF-weight, TR, 1 in, Die R100N, 7000045622
Standard Abrasives 882140, A/O Unitized Wheel, 821, 3 in x 1/2 in x 1/4 in, 7000046920
3M 88905, PSA Cloth Disc 348D, 40 X-weight, 12 in x NH, Die 1200B, 7010294665
Dynabrade 92771 4" W x 150' L 9 Micron A/O Microfinishing Film DynaCut Roll
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933
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 