Plastic
An instrument consisting of a jointed arm with one end fastened to a rectangular shaped board and the other end free to move over the surface of the board. Attached to the free end of the arm is either a triangle, a protractor head and triangle, or a protractor head and l-square.
Classification: Drafting tables and machines, whether or not automatic
NSN 5975-00-417-3321
NSN 6240-00-177-0385
NSN 6135-01-056-4609
NSN 6105-00-724-6007
NSN 5965-01-245-6585
NSN 6320-01-564-0893
NSN 5945-00-753-7716
NSN 6110-01-364-0966
NSN 5965-00-208-4896
NSN 5895-01-278-6761
NSN 5965-01-007-1963
NSN 6685-00-148-4847