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 6620-01-352-5640
NSN 5996-01-128-4811
NSN 6145-00-912-5067
NSN 5925-00-706-4582
NSN 2925-00-863-8578
NSN 5895-01-475-7226
NSN 4140-01-299-7704
NSN 6685-01-423-9681
NSN 6610-01-316-8902
NSN 5965-00-518-0958
NSN 6105-01-228-3388
NSN 6320-01-415-0953