Faber castell 2 82 manual meat4/5/2023 Albert Einstein is also claimed to have used these rules. (See also last paragraph below, and images in comment thread.)ģ) Various web sites claim that the German rocket scientist Wernher von Braun acquired in the 1930s two Nestler slide rules, the only ones he ever used, including while heading the NASA Moon landing program. It is longer than the maker's 10" rules, and shorter than their 20" models, yet it has the same graduation density as the larger ones. So it is now identified as a Nestler, and about 120 year old. My grandfather's rule here clearly shows that. There I learned four things that amazed me.ġ) 2022 is the 400th anniversary of the invention of the slide rule by William Oughtred!Ģ) ISRM indicates that 1901-1902 Nestler models were stamped on the slide cavity with just the manufacturer's initials, AN, plus a design patent number. After the initial upload I found a fascinating resource, International Slide Rule Museum (ISRM). While I'm in the mood for tabletop photography, here are some ghosts of "Napier's Bones".
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