Aristo 956 Bildflug civilian airplane Photo slide rule 1970 Germany

This is a military slide rule used for calculating condition for arial photography aka taking pictures out of airplanes. Used for by civilian pilots and crew as well as for army purposes from 1965-1977. This one was for civilian use. It comes in the original plastic container. Everything is complete, no cracks, chips or dings and in working condition with only small signs of use but some signs of age (the plastic ends turned a little yellow). It measures ca. 35 cm or 14 inches wide. Check the attached video on how to work your vintage man tool : slide rule operation instructions! And also make sure to take a quick look at the Nestler 55cm / 22″ flugzeit I sold before.