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 6150-01-054-6677
NSN 5965-01-366-5900
NSN 6320-01-225-9963
NSN 5895-01-419-4903
NSN 6650-01-493-9985
NSN 5905-01-324-1548
NSN 5975-01-482-4573
NSN 6240-01-552-8831
NSN 5998-01-424-0606
NSN 6320-01-629-1277
NSN 5996-01-608-6025
NSN 6135-00-152-8729