Slide Rule Universe has everything you every wanted to know about slide rules, even how to build your own… You did want to know about slide rules, didn’t you?
An amazing variety of slide rules are on sale in the catalog - fancy calculating the trajectory of a 105mm Howitzer shell, or computing flow parameters for hydraulic valves, then they have a slide rule for you.
Personally I’m still looking for a good set of Napier’s Bones - never seem to turn up on eBay for some reason.
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