• Thumbnail for Slide rule
    A slide rule is a hand-operated mechanical calculator consisting of slidable rulers for conducting mathematical operations such as multiplication, division...
    67 KB (8,391 words) - 03:52, 19 April 2025
  • Look up slide rule in Wiktionary, the free dictionary. A slide rule is a mechanical analog computer. Slide Rule may also refer to: Slide Rule (album)...
    378 bytes (84 words) - 09:06, 11 January 2019
  • Thumbnail for Slide rule scale
    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...
    26 KB (1,750 words) - 22:36, 28 January 2025
  • Thumbnail for Fuller calculator
    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...
    36 KB (3,692 words) - 16:07, 7 April 2025
  • Thumbnail for International Slide Rule Museum
    The International Slide Rule Museum (ISRM) is an American museum dedicated to the preservation and display of slide rules and other mathematical artefacts...
    3 KB (258 words) - 18:54, 21 March 2025
  • The Bygrave slide rule is a slide rule named for its inventor, Captain Leonard Charles Bygrave of the RAF. It was used in celestial navigation, primarily...
    3 KB (291 words) - 07:59, 25 January 2025
  • Thumbnail for Scientific calculator
    mathematical operations and functions. They have completely replaced slide rules as well as books of mathematical tables and are used in both educational...
    10 KB (970 words) - 23:49, 7 May 2025
  • Thumbnail for Keuffel and Esser
    4181-3 slide rule, front scales K&E 4181-3 slide rule, rear scales High-precision extra-length engineering slide rule 4081-5 Sewer slide rule Fetal medical...
    11 KB (1,072 words) - 20:44, 28 May 2025
  • In measurement, the Coggeshall slide rule, also called a carpenter's slide rule, was a slide rule designed by Henry Coggeshall in 1677 to help in measuring...
    3 KB (413 words) - 08:04, 25 January 2025
  • Thumbnail for Small-angle approximation
    are given with somewhat worse than the usual expected "slide-rule accuracy". Some slide rules, such as the K&E Deci-Lon in the photo, calibrate to be...
    16 KB (2,137 words) - 04:00, 22 May 2025
  • Thumbnail for History of logarithms
    four centuries. The idea of logarithms was also used to construct the slide rule (invented around 1620–1630), which was ubiquitous in science and engineering...
    47 KB (5,447 words) - 05:32, 22 May 2025
  • Thumbnail for E6B
    The E6-B flight computer is a form of circular slide rule used in aviation. It is an instance of an analog calculating device still being used in the 21st...
    15 KB (2,228 words) - 23:32, 6 May 2025
  • Thumbnail for Logarithm
    _{b}x+\log _{b}y,} provided that b, x and y are all positive and b ≠ 1. The slide rule, also based on logarithms, allows quick calculations without tables, but...
    98 KB (11,674 words) - 16:13, 4 May 2025
  • Slide Rule: Autobiography of an Engineer is the partial autobiography of the British novelist Nevil Shute. It was first published in 1954. Slide Rule...
    4 KB (555 words) - 19:41, 29 January 2025
  • Thumbnail for Calculator
    compass (by Galileo), logarithms and Napier bones (by Napier), and the slide rule (by Edmund Gunter). The Renaissance saw the invention of the mechanical...
    74 KB (8,430 words) - 00:44, 1 June 2025
  • Thumbnail for Geniac
    Oliver Garfield also sold the Otis King's Patent Calculator, a helical slide rule, under the Geniac brand. Initially he resold the ones manufactured by...
    8 KB (779 words) - 15:38, 27 February 2025
  • Thumbnail for Logarithmic scale
    curves are often depicted on a logarithmic scale graph. The markings on slide rules are arranged in a log scale for multiplying or dividing numbers by adding...
    13 KB (1,203 words) - 20:46, 10 March 2025
  • Slide Rule (1940 – ? ) was a Thoroughbred race horse who was owned by William E. Boeing of Boeing. He sired by Metropolitan and Suburban Handicap winner...
    5 KB (669 words) - 19:15, 24 August 2024
  • Thumbnail for Breitling SA
    Chronomat 01 and Navitimer 01. In the 1940s, Breitling added a circular slide rule to the bezel of its Chronomat models. This bezel became most associated...
    23 KB (2,381 words) - 05:01, 28 March 2025
  • Thumbnail for Amédée Mannheim
    the modern slide rule. Around 1850, he introduced a new scale system that used a runner to perform calculations. This type of slide rule became known...
    2 KB (78 words) - 02:55, 4 March 2023
  • Thumbnail for HP-35
    challenged France Rode to create a "shirt-pocket sized HP-9100". At the time, slide rules were the only practical portable devices for performing trigonometric...
    14 KB (1,642 words) - 07:19, 25 January 2025
  • Thumbnail for High tech
    to simple, often traditional or mechanical technology; for example, a slide rule is a low-tech calculating device. When high tech becomes old, it becomes...
    12 KB (852 words) - 20:53, 19 May 2025
  • Slide Rule is the sixth solo album by dobro player Jerry Douglas, released in 1992 (see 1992 in music). It was his first release on the Sugar Hill label...
    2 KB (178 words) - 02:19, 30 May 2025
  • A flight computer is a form of slide rule used in aviation and one of a very few analog computers in widespread use in the 21st century. Sometimes it is...
    4 KB (485 words) - 08:00, 25 January 2025
  • (1949 or 1950 — September 4, 2023) was a renowned American collector of slide rules. He was born in Los Angeles, and attended University of California, Los...
    3 KB (292 words) - 17:04, 8 February 2025
  • Thumbnail for Analog computer
    signals). Analog computers can have a very wide range of complexity. Slide rules and nomograms are the simplest, while naval gunfire control computers...
    57 KB (7,070 words) - 04:11, 30 May 2025
  • Thumbnail for William Oughtred
    logarithmic scales (lines, or rules) upon which slide rules are based, Oughtred was the first to use two such scales sliding by one another to perform direct...
    54 KB (6,416 words) - 11:17, 31 March 2025
  • Thumbnail for Slide calculator
    versions have a built-in slide rule on the back. Sometime between 1666 and 1675, French polymath Claude Perrault invented the first slide calculator, called...
    6 KB (578 words) - 07:42, 25 January 2025
  • Thumbnail for Computer
    functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time...
    140 KB (14,125 words) - 23:29, 1 June 2025
  • Thumbnail for Nomogram
    guideposts to the user. Like a slide rule, a nomogram is a graphical analog computation device. Also like a slide rule, its accuracy is limited by the...
    19 KB (2,470 words) - 00:13, 19 March 2025