**How to Use a Slide Rule (with Pictures) - wikiHow**
https://www.wikihow.com/Use-a-Slide-Rule

Notice the gaps between numbers. Unlike an ordinary ruler, the numbers on a slide rule scale aren't spaced on an even, linear scale. Instead, the numbers are spaced using a special "logarithmic" formula, closer together on one side than the other. This lets you line up the scales to get the answer to multiplication problems, as described below. Look for scale labels. Each scale on the slide rule should have a letter or symbol identifying i… 93%(52) Views: 62K Published: Dec 16, 2007

Notice the gaps between numbers. Unlike an ordinary ruler, the numbers on a slide rule scale aren't spaced on an even, linear scale. Instead, the numbers are spaced using a special "logarithmic" formula, closer together on one side than the other. This lets you line up the scales to get the answer to multiplication problems, as described below.

Look for scale labels. Each scale on the slide rule should have a letter or symbol identifying i…

93%(52)

**Views:** 62K

**Published:** Dec 16, 2007

**DA:** 27 **PA:** 60 **MOZ Rank:** 50