Aristo 0958 Geodät Land Surveyor 400g slide rule set 1970 Germany

This Aristo 958 slide rule comes in an almost full set so with the original plastic container, with riser feet, guarantee and sheet (unfortunately no manual), which are all made in Germany ca. 1970’s. This model is the 0958 Geodät / 958 Geodat, a special slide rule made for the Land Surveying in Europe, with the 400g (Gon/Gradian scale) instead of the 360 degree scale. This slide rule has a specific “ER” indicator over the hairline. It has scales on the front and back with 2 still visible yellow lines on both sides of the slider. Curser and rule are complete and in very good condition. Some signs of use and age, there is little green on the gold paint of the curser bottom. The container is complete and in very good condition as well. The small rubber fixed feet on the rule itself are all accounted for and in good shape. The rule measures ca. 34 cm or ca. 13 3/4 inches wide. Do check the video below on how to work your vintage man tool : slide rule operation instructions!