Learning something on YouTube seems kind of modern. But if you are watching a 1957 instructional film about slide rules, it also seems old-fashioned. But Encyclopædia Britannica has a complete ...

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 ...

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 ...

If the Otis King slide rule in [Chris Staecker’s] latest video looks a bit familiar, you might be getting up there in age, or you might remember seeing us talk about one in our collection. Actually, ...