73038979
Dec 9, 1974
Sep 6, 1977
SEXTANTS AND OTHER NAVIGATIONAL INSTRUMENTS AND DEVICES, TO-WIT: MANEUVERING BOARD; UP WIND COURSE DEVIATION AND SPEED COMPUTER; DOWN WIND COURSE DEVIATION AND SPEED COMPUTER; COMPASS; POSITION PLOTTING SHEET; CELESTIAL AZIMUTH STAR FINDER; TIME SPEED AND DISTANCE SLIDE RULE; NAUTICAL DISTANCE SCALE; AND PROTRACTOR AND PARALLEL RULE
Electrical and Scientific Apparatus