I mean really
old computers, before electronics. As many of my readers know, I collect old computing instruments – slide rules (especially), sector rules, Gunter's rules, and abaci. But there's one old computing instrument that I don't have even a single example of, and I'd sure love to: Napier's bones
. I'm not interested in any of the modern replicas; I would like to get one of the real deals, in any of its many variants
, made (most likely) in the 1600s. I've never seen one for sale, dang it. Anybody got a set lying about?
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