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exploded-view poster drawing of over 150 internal pieces of a hand crank, sixty year old manufactured mechanical calculator; descriptions are in German but not necessary for understanding the intricacy of all the moving parts - photo from www.vcalc.net

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exploded-view poster drawing of over 150 internal pieces of a hand crank, sixty year old manufactured mechanical calculator; descriptions are in German but not necessary for understanding the intricacy of all the moving parts - photo from www.vcalc.net
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/112/208/451/228/371/727/original/401a2ad9782015a9.jpg

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petabites (houstondog@mastodon.world)'s status on Thursday, 04-Apr-2024 04:08:49 JST petabites
in reply to

@mattblaze

I think that such "internal levers" are quite underrated.

There is a #MathGrenade auction on Ebay right now (in its final day, up to $550 currently) of a 1964 CURTA hand crank mechanical calculator

__www.ebay.com/itm/226066922742

* complete with metal case for this #PepperGrinder design, from a WWII Concentration camp (Buchenwald) survivor

In conversation about a year ago from mastodon.world permalink