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 6145-01-422-0806
NSN 5910-01-447-2842
NSN 7035-00-206-6123
NSN 6645-01-121-0530
NSN 5925-01-550-8457
NSN 5975-01-204-4085
NSN 7035-00-238-3662
NSN 5915-00-233-7592
NSN 5975-00-443-5625
NSN 6240-01-273-0193
NSN 6240-00-187-4306
NSN 5975-01-004-7966