Aristo 10125 Galvanotechnicher pocket slide rule electroplating 1970 Germany

This pocket slide rule is a complete manual or nowadays a complete computer program on electroplating. It covers all base metals as well as all metals that can be used for adding layers to these base metals. It was made by Aristo from Germany specially for the Company LPW (Langbein – Pfanhasuer Werke AG) a specialist Company in the Galvanizing technic field.  The system used is developed by Jernstedt. The instructions are on the back. The slide has 2 very specific sides for electroplating. It even comes in a specific LPW signed leather sleeve. The case and slide rule are all complete and in very good condition with hardly any signs of use and age. The slide rule measures ca. 15 cm or 6 inches. Check the attached video on how to work your vintage man tool: slide rule operation instructions!