Graphoplex 670 GEO-Technologique sys Garland slide rule 1970 France

This slide rule comes with the original leatherette sleeve, no manual, but the short manual is located on the back. This is a slide rule specifically made for topographic calculations and was made by Graphoplex from France. This model is the 670 (no number on the rule or box). The rule itself is made of plastic, as well as the cursor. The cursor is extra large with many hairlines and codes. 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!