It is no secret that we like slide rules around the Hackaday bunker, and among our favorites are the cylindrical slide rules. [Chris Staecker] likes them, too, and recently even 3D printed a version.

Used by engineers for centuries, they were displaced by pocket calculators and all but forgotten until Mr. Shawlee created a subculture of obsessives and cornered the market. By Alex Traub For about ...

Ever wanted to know how engineers made their calculations before digital calculators were on every workbench? [Richard ...

I’ll be honest, I have no idea how to use a slide rule. But I’ve always found them to be very intriguing, mostly because they look very complicated, and I have a soft spot for the trappings of geekery ...

WILLIAMSTOWN — They weren’t exactly a “fad” (you couldn’t wear one, a barber or hairdresser couldn’t shave or sculpt one), but slide rules nevertheless became what might be called academically ...

When you look at the Dow Jones Industrial Average or a bank statement or your receipt at the grocery local store, do you ever stop to think about how numbers are actually processed? (It’s OK – you won ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This ten-inch duplex slide rule is ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This ten-inch yellow plastic duplex ...

For about 350 years, humanity’s most innovative handheld computer was something called a slide rule. As typewriters once symbolized the writer, slide rules symbolized the engineer. These analog ...

I’ve written about this several times over the years, but it’s time to write about it again. I’ve retold the story four times ...