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• Recreation: Antiques: Medical and Scientific: Slide Rules  (39)

About Slide Rules - - Explains how to use the different scales to multiply and divide.

Basic Slide Rule Instructions - - Explains how to multiply, find cube and square roots and other operations. Includes illustrations.

The Coggeshall Slide Rule - - History of this unusual 1600s slide rule.

Edwin Thacher's 1881 Slide Rule Patent - - Specification forming part of Letters Patent No. 249117, dated November 1, 1881. Includes diagrams.

Eric's Introduction to the Slide Rule - - Slide rule resources and links.

History of the Slide Rule - - Basic facts involving the development of the slide rule. Includes diagrams and links to information on various types of slide rules.

How a Slide Rule Works - - Short lesson.

How To Make a Slide Rule (or Log-log or Semilog Graph Paper) - - Fairly simple instructions.

How to Use a Slide Rule as a Bicycle Gear Chart - - Slide rules are useful for doing gear calculations. Briefly describes a method for doing so.

Instructions in Slide Rule Use - - Basic information and a number of manuals in pdf format.

Internet Slide Rule - - Internet port of history's most heavily used advanced calculation aid.

Make Your Own Circular Slide Rule - - Templates, directions, and some links to other slide rule sites.

Napier's Bones - - A story about the use of a 6-inch Pickett "all-metal" slide rule (Model N 200-ES), with case.

The Scales of the Slide Rule - - Various scales in a convenient tabular form. Includes mathematical formulation of the scales.

Slide Rule as a Teaching Tool - - Examples of how the slide rule is a useful tool for teaching the mathematical concept of transformations. Examples and illustrations.

Slide Rule Scales - - Describes the types of scales found on most slide rules.