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A slide rule scale is a line with graduated markings inscribed along the length of a slide rule used for mathematical calculations. The earliest such device had a single logarithmic scale for performing multiplication and division, but soon an improved technique was developed which involved two such scales sliding alongside each other.
In 1722, Warner introduced the two- and three-decade scales, and in 1755 Everard included an inverted scale; a slide rule containing all of these scales is usually known as a "polyphase" rule. In 1815, Peter Mark Roget invented the log log slide rule, which included a scale displaying the logarithm of the logarithm. This allowed the user to ...
A slide rule, aligned to calculate 5.5÷2: Date: 2 February 2007, 18:29 (UTC) Source: This is an SVG version of en:Image:Slide rule example4.jpg: Author: Wrtlprnft, original image made by Benjamin Crowell: SVG development
Printable version; Page information; ... Backpack for scale. Date: 9 November 2019: Source: Own work: ... A classroom-sized demonstration slide rule, at the MIT ...
English: Slide rules were used for 350 years to preform the functions of a pocket calculator. This images illustrates how the simple multiplication function worked. This images illustrates how the simple multiplication function worked.
The Fuller calculator, sometimes called Fuller's cylindrical slide rule, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. This creates an instrument of considerable precision – it is equivalent to a traditional slide rule 25.40 metres (1,000 inches) long.
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The International Slide Rule Museum (ISRM) is an American museum dedicated to the preservation and display of slide rules and other mathematical artefacts. Established in 2003 by Michael Konshak, who serves as its curator, [3] [4] the museum houses a collection of slide rules from divers manufacturers and time periods, showcasing the evolution and importance of these instruments in the history ...