Computer - Round 4 1/4 inch

CR-Computers are very popular with pleasure and professional pilots. They solve time/speed/distance and wind triangle problems for light aircraft as well as those which approach Mach 2 speeds. Corrections for errors of compressibility and temperature rise are computed with ease. The wind solution is displayed graphically using the small back-side discs. Each computer comes with a handsome vinyl case and a fully illustrated manual.