Ecobra R154 Cosmos slide rule full set 1960 Germany

This is one of the more elaborate models made by Ecobra from Germany. This model Cosmos with number R154 has 22 scales in total. It comes in the original sleeve, still with plastic, manual in German and additional info sheet. It is hardly used as can be derived from the small green feet in the end pieces. Overal condition is close to new, although there is one small issue with the cursor construction where the metal screws can easily result in small cracks in the plastic, this is also the case here around several of the screws. 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!