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 5855-01-286-9928
NSN 5855-00-228-8446
NSN 5905-01-237-2439
NSN 5998-00-399-2830
NSN 5960-00-816-9040
NSN 6105-01-426-2772
NSN 7035-01-251-9566
NSN 5990-01-224-8052
NSN 6135-01-265-1384
NSN 6610-00-915-3215
NSN 5910-01-190-6859
NSN 6645-01-075-7722