This set of slide rule and container are from Aristo from Germany. This model is the rare 939 Stahlbeton Duplex. It has special scales on both sides as well as a spectacular cursor. Used for calculations for reinforced concrete according to the Göttsch system. Everything is complete and in very good condition, with some signs of use and age which is mostly a little bleeding of the ink as shown in the pictures. It also comes with it’s data sheet. It measures 33,5 cm or 13 1/4 inches. Check the attached video on how to work your vintage man tool : slide rule operation instructions!
Aristo stahlbeton 939 Göttsch concrete slide rule case 1960 Germany
€75.00
Aristo stahlbeton 939 reinforced concrete system Göttsch slide rule full set made ca. 1960 Germany
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