

The rule is about 13.5 inches long and 2.25 inches wide. It's made of plastic, and has 30 scales and 11 cursor marks. This is one of the fanciest and most beautiful slide rules ever made, a Faber Castell Novo Biplex 2/83 N. If you are looking for that software The two images on this page were scanned by Clark McCoy of the They show the two sides of a particular slide rule in my collection. The purpose of this particular and quite idiosyncratic slide rule page is to describe common scales used on slide rules, and the kind of mathematical expressions that could be evaluated with those scales.Ī subsidiary of this page describes a software package that let's you enter an expression and will tell you how that expression can be evaluated with a slide rule. In those days, when we needed to compute things, we used slide rules which are marvelous and beautiful instruments! There are many pages about slide rules on the web, and you can still buy brand new slide rules (40 years old but never used, and still in their factory supplied box) in various places. This did not stop us from doing complicated things, like going to the moon, figuring out the double helix, or designing the Boeing 747. What Can You Do With A Slide Rule? - What Can You Do With A Slide Rule? There was a time when electronic calculators did not yet exist.
