A flat, steel plate of rectangular, square or semicircular shape, graduated in degrees. A pivoted arm is attached to the plate by means of a stationary bolt and thumb nut which locks the arm in any desired position. Used primarily in the metal working trades for laying out and transferring angles, scribing lines, and checking clearances on end mills and the like. Excludes protractor, one arm; protractor, two arm; protractor, three arm.
Classification: Dis calculators, slide rulers and other mathematical calculating instruments
NSN 5999-01-482-8607
NSN 5990-01-249-2060
NSN 6135-01-154-3526
NSN 2925-01-423-4962
NSN 6685-01-487-3988
NSN 6145-01-167-5977
NSN 6650-01-331-5243
NSN 6610-01-221-2606
NSN 5895-01-496-9566
NSN 6220-00-030-6728
NSN 5950-00-023-8184
NSN 5855-00-014-5008