Nestler Elemath log log duplex slide rule with container 1970 Germany

This slide rule is comes with the original signed container, both made in Germany by Nestler. This model is the elaborate Elemath log – log Duplex, with 22 scales on both sides. The Nestler name and model is on the rule, the Nestler name also on the container and outer box. It is made of plastic and has a complex cursor with multiple hairlines. Curser, slide rule and container are in good condition with small signs of use and age (some yellow on container ends). The small rubber feet are accounted for and in very good condition as well. It measures ca. 35 cm or 14 inches. Check the attached video on how to work your vintage man tool : slide rule operation instructions!