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Keuffel and Esser 7" slide rule (5" scale, 1954) [1] 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 ...
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 ...
The second, outer, cylinder is printed with the slide rule's primary logarithmic scale in the form of a 50-turn helix 12.70 metres; 500 inches (41 ft 8 in) long with annotations on the scale going from 100 to 1000. A brass tube with a mahogany cap at the top is a slide fit into the first cylinder.
Download QR code; Print/export Download as PDF; ... Slide rule scale This page was last edited on 16 October 2023, at 02:32 (UTC). ...
Download QR code; Print/export Download as PDF; Printable version; ... Slide rule; Slide rule scale; Smearing retransformation; Logarithmic spiral; T.
Following the patent and release of Harold's Long Scale calculator featuring two knobs on the outside rim in 1914, he designed the Magnum Long Scale calculator in 1927. [ 6 ] [ 7 ] As the name "Magnum" implies, it was a fairly large device at 4.5 inches in diameter—about 1.5 inches more than Fowler's average non-Magnum-series calculators. [ 8 ]
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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