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 5915-01-265-0862
NSN 6645-01-152-1092
NSN 5895-01-083-8529
NSN 5990-01-126-5824
NSN 6685-00-905-5601
NSN 6650-00-629-8027
NSN 6105-01-141-2371
NSN 6105-01-133-8094
NSN 5950-01-417-3119
NSN 6240-01-541-6009
NSN 5945-00-759-6271
NSN 5990-00-075-4053