Sep 9, 2025 · To someone who doesn't know how to use it, a slide rule looks like a ruler designed by Picasso. There are at least three different scales, and on most of them the numbers aren't even …

Just follow the step-by-step instructions and you will be amazed by the power and versatility of the venerable Slipstick. Click on any of the images below to get a large, unmarked, blowup of each slide …

English mathematician and clergyman Reverend William Oughtred and others developed the slide rule in the 17th century based on the emerging work on logarithms by John Napier. It made calculations …

A More Complete Slide Rule Tutorial: A member at Instructables asked me to explain how to use a slide rule for the sake of those who came along about the time electronic calculators replaced slide rules.

Basic Slide Rule Instructions To multiply two numbers on a typical slide rule, the user set the left index (start of the scale) on the C scale to line up with one factor on the D scale.

The slide rule eased the addition of the two logarithmic displacements of the numbers, thus assisting with multiplication and division in calculations. More functionality was later added such as the ability …

n using the slide rule. We'll use the scales labeled C and D. These two scales are laid out so that each number x is log(x) times 6 inches from the left end o the 6 inch long scale. The numbers ver 3.0 on …

This section tells you how to use a slide rule. It includes a guide to the most common uses of a rule and instructions for some non-standard rules. Instructions for some common and not-so-common rules in …

Despite being a simple mechanical device, the slide rule can help with multiplication, division, square roots, logarithms, and trigonometric functions. In this article, we’ll discuss how to use a slide rule …

These videos explain the theory behind the slide rule and how to use it. I made them as I learned about slide rules myself. An understanding of high-school mathematics is sometimes...