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 5895-01-421-4487
NSN 6645-00-624-5963
NSN 6645-00-484-1992
NSN 6645-00-654-8804
NSN 6685-01-349-1615
NSN 6145-00-504-5221
NSN 6135-00-519-1325
NSN 5975-01-083-9642
NSN 6610-00-934-1044
NSN 6130-01-080-6577
NSN 6685-01-634-0611
NSN 5935-01-392-9706