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

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.

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the 1930s, engineers shared ...

Forget apps and smart displays. The most elegant kitchen calculator is a mechanical device from the 1600s. Entropic Thoughts makes the case for keeping a slide rule in your kitchen drawer. The problem ...