Slide rules can perform the basic arithmetic operations of addition, subtraction, multiplication, and division, but they can also be marked for computing with logarithms, square and cube roots, ...

For example, the A scale does squares and square roots and trig scales were also common. If you want a visual demo of how it works, check out the video below. Unlike a calculator, a slide rule ...

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.

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 ...