Graphoplex Thermocoax manual slide rule full set 1970 France

This slide rule comes with the original leatherette sleeve and manual.  This is a slide rule is called the Thermocoax and was made by Graphoplex from France. The rule itself is made of plastic, as well as the cursor.  Curser and slide rule are complete and everything is in good, mildly used condition with some signs of use and age. The slide rules measures ca. 33 cm or 13 inches. Do check the attached video on how to work your vintage man tool : slide rule operation instructions!