But [Mathologer] discusses a recent Reddit post that explains a circular slide rule-like device using a wheel and a stretchable rubber band. While it probably would be difficult to build the ...

In this follow-up Reddit post he discusses the fabrication techniques used for the acrylic circular slide rule shown in the lead photo. It’s always been possible to make your own slide rules ...

Primarily for multiplication and division, the slide rule has two stationary sets and one sliding set of numbers in the center. To multiply, numbers are added; to divide, numbers are subtracted.

Firms in the United States, Europe, and Japan made millions of the objects, and slide rule cases that attached to a belt loop were as common a sight on the hips of technical students in the 1950s and ...

The slide rule was the evelution of Napier's Rods (or bones) which where used for multiplication. Before the electronic calculator, in 1974, the slide rule was used by scientists and students to ...