With counter balancing device and 15 degrees inerval of automatic indexing
An instrument primarily used in drafting, consisting of two joined arms, one end being secured to a stationary surface and the other end equipped with an adjustable protractor and removable ruled scale(s); or two rigid beams, one beam anchored across full length of top of drawing board, the other beam perpendicular to top beam equipped with adjustable protractor and removable ruled scale(s). It is used as a guide for drawing parallel lines at any angle on a chart or drawing, or transmitting reference points.
Classification: Drafting tables and machines, whether or not automatic
NSN 6620-00-431-3837
NSN 5925-01-327-6998
NSN 5950-00-894-5343
NSN 5895-01-579-3513
NSN 6220-01-422-1429
NSN 6135-00-891-4944
NSN 6150-01-482-6500
NSN 5990-01-299-2014
NSN 5935-01-403-2844
NSN 6620-01-208-5915
NSN 5950-01-216-6135
NSN 6650-01-644-6476