Interesting piece of Pilot navigator equipment from the 1960’s is this Time Turn Computer MK-8 by Kane AERO Company from the USA . This Air Navigation slide rule is completely made of metal and comes with the original multipage manual. Manual is date 1964 (slide rule is date 1963). It is two side and in hardly used condition, as is the case (has the model name on both sides) and the original manual. This circular slide rule measures only 10 cm or 4 inches in diameter. Check the attached video on how to work your vintage man tool : aviation slide rule operation instructions!
