Unless you are above a certain age, the only time you may have seen a slide rule (or a slip stick, as we sometimes called them) is in the movies. You might have missed it, but slide rules show up in ...

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.

The slide rule was the most convenient calculator available to builders and scientists until the development of electronic calculators a few years ago. They also made great looking tie clips. Scottish ...

It was the only technological tool widely and continuously used for over three centuries. For math and science geeks it was a badge of honor, nestled neatly into a plastic pocket protector along with ...

The protractor and the Bunsen burner. Playing the recorder in music class. Drawing arcs and circles with a compass in geometry. These tools of the education trade become part of our lives for a ...

While some (math-phobics) still may relish the simple beauty and non-threatening functionality of the abacus, there are those who have made the transition to more challenging computing gadgets—many ...

An appreciation of watches often takes you back in history. That is especially the case when you find yourself asking "what is that for?" A commonly misunderstood feature on some pilot watches is the ...

When the apocalypse finally arrives, those with the booksmarts will be the upperymen. Maybe somebody you know will be the readerwriter and maybe somebody you know will learn how to make the brandywine ...

An early computing device invented by Reverend William Oughtred in London in the 17th century. Primarily for multiplication and division, the slide rule has two stationary sets and one sliding set of ...