Nestler Polymath-Duplex pocket slide rule 0129 sleeve 1970 Germany

This pocket slide rule is close to new and comes with the original signed leather sleeve, both made in Germany by Nestler. This model is the elaborate Polymath-Duplex, nr. 0129 with 24 scales on both sides. The Nestler name and model is on the rule itself, on the sleeve (just Nestler). The rule is completly made of plastic and so is the cursor with multiple hairlines. Curser, slide rule and sleeve are complete and in great condition with only small signs of storage. It measures ca. 17,5 cm or 7 inches. Check the attached video on how to work your vintage man tool : slide rule operation instructions!