Faber Castell 62/83N Novo-Duplex slide rule pocket 1970 Germany

In great condition comes this pocket slide rule by Faber Castell, model 62/83N version. In the 1970’s these were amongst the best slide rules by Faber Castell. The slide rule comes in the original signed  leather sleeve. The rule, and sleeve are both in great condition with minimal signs of use and age (no yellowing). The sleeve measures ca.22 cm or 9 inches long. Check the attached video on how to work your vintage man tool: slide rule operation instructions!