Nestler nr. 36 Electro. It is also an electro slide rule for the engineer that worked with early electrics but with different scales compared to the very popular 37. It has additional scales below the slider as well as a metal point on the left. It is all complete and in very good condition but it seems it has a little later cursor that can also be found on the model 37. This was probably and upgrade / replacement. It also comes in the original early leather case with Nestler logo imprinted and the “GEVEHA” gold letter name on the back. It has protected the slide rule well but the lid of the case went missing. The slide rule measures a standard 29,5 cm or 12 inches in length. Do check the video below on how to work your vintage man tool : slide rule operation instructions!
