Around here we mostly enjoy slide rules. We even have our own collections including some cylindrical and circular ones. But [Mathologer] discusses a recent Reddit post that explains a circular slide ...

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 yellow aluminum circular slide ...

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 ...

A unique timepiece has been created by Caliper in the form of the Slide Rule , a watch mechanical watch with an integrated slide rule, that comes supplied with a separate circular steel slide rule.

Recently I overheard two high-school teachers say that many math teachers no longer teach students about significant figures. So, the young people don't realize 3.3 times 3.3 equals 11, not 10.89. One ...

The slide rule, sometimes called a slipstick, was a type of mechanical analog computer. It was and still is, used primarily for multiplication and division, and also for functions such as roots, ...

A regular slide rule takes advantage of the fact that you can multiply and divide by adding logarithms. Imagine having two rulers marked in inches or centimeters — it doesn’t matter (see the adjoining ...