Meet one of the more complicated mechanical devices ever built by Man, the Olivetti 27-2

In this video I show the Olivetti Logos 27-2, a very complex calculator, and the Olivetti 27-1. These are calculators from 1960s. If you like old mechanisms and old technology, the Olivetti 27-2 is your calculator. Many thanks to Emanuele for the precious information and document he gave me on this calculator. This video has multilingual audio; you can select your language's audio, not just the subtitles. YouTube's audio translation isn't always perfect—there are a lot of silly mistakes—but I think it's already pretty good. If something seems not correct, check the subtitles in your language. The video has audio in 12 languages: Video with audio in Italian Video with audio in English 한국어 오디오가 포함된 비디오 日本語音声付きビデオ Video with audio in French हिंदी ऑडियो के साथ वीडियो Video with audio in Bahasa Indonesia Video and audio are available in the Netherlands Wide audio in Polish Video with audio in Portuguese Video with audio in Spanish Video with audio in German