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geometry
the slide rule
Two mathematical innovations in the 17th Century were the slide rule and algorithms.
The Slide Rule
Two examples are abacus and slide rule
You could use it to find the answer to basic mathematical problems. It's like a simple, mechanical calculator.
Translation is sliding without turning. You can slide left or right, or up or down (or any combination).
William Oughtred was the inventor of the Slide Rule which allowed mathematical operations such as multiplication and division to be calculated by reading values from graduated scales. Slide rules were still commonly used in the 1970's and early 1980's but with the invention of modern electronic calculators, the use of the slide rule has declined.
J. J. Del Grande has written: 'Mechanical aids to computation' -- subject(s): Slide-rule, Mathematical instruments
Napier's Bones are an old name for the slide rule, a mechanical method of rapidly doing mathematical operations using logarithms expressed as a divided line.
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