7035-99-255-5931

3610-01-288-0638 3610012880638 012880638 is a device designed to print a blueprint, sepia print, blue line print, or a reproduced tracing. for items which will also print a direct process print, see printing machine, blueprint-black and white process print.

6605-01-303-2401 6605013032401 013032401 is a device generally constructed of plastic material having a rotating center sheet between two fixed identical outer sheets. a black azimuth circle, with markings on the outside of the circle, is printed on each of the outer sheets, and a red azimuth circle, with markings inside the circle, is printed on each side of the rotating center sheet. the azimuth circles have radial lines placed ten degrees apart and ten concentric rings, with each concentric ring 0.5 inch (12.7 millimeters) greater than the preceding one. this device is arranged to provide true-relative and relative-type bearing conversion for simultaneous plotting of true and relative bearings and to perform the functions of a standard maneuvering board on each side, permitting two plots at different scales.