equipment for aviation computations; namely, distance plotters, navigation plotters, aximuth plotters, holding pattern plotters, declitractors and map measurers, specifically, inch counters and fuel/speed plotters; compasses; compass protractors; calculators; audio-headsets, sunglasses, goggles, and infrared training glasses, and cases therefor; microphone and earphone frequency adapters; and prerecorded audio and video cassette tapes featuring aviation and flight instruction
Electrical and Scientific Apparatus