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  2. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    Proportion wheels are still used in graphic design. Various slide rule simulator apps are available for Android and iOS-based smart phones and tablets. Specialized slide rules such as the E6B used in aviation, and gunnery slide rules used in laying artillery are still used though no longer on a routine basis. These rules are used as part of the ...

  3. E6B - Wikipedia

    en.wikipedia.org/wiki/E6B

    E6B. The front of a metal E6B. The E6B 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 century. An E6B flight computer commonly used by student pilots. They are mostly used in flight training, because these flight computers have been replaced with ...

  4. Flight computer - Wikipedia

    en.wikipedia.org/wiki/Flight_Computer

    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 called by the make or model name like E6B, CR, CRP-5 or in German, as the Dreieckrechner. [1] They are mostly used in flight training, but many professional pilots still carry and use flight ...

  5. Analog computer - Wikipedia

    en.wikipedia.org/wiki/Analog_computer

    As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Aviation is one of the few fields where slide rules are still in widespread use, particularly ...

  6. International Slide Rule Museum - Wikipedia

    en.wikipedia.org/wiki/International_Slide_Rule...

    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 ...

  7. Bygrave slide rule - Wikipedia

    en.wikipedia.org/wiki/Bygrave_slide_rule

    Bygrave A.M.L. Position line slide rule Mk. IIA serial No. 355. 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 in aviation. Officially, it was called the A. M. L. Position Line Slide Rule (A.M.L. for Air Ministry Laboratories).

  8. Fuller calculator - Wikipedia

    en.wikipedia.org/wiki/Fuller_calculator

    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. It was invented in 1878 by George Fuller ...

  9. Walter Shawlee - Wikipedia

    en.wikipedia.org/wiki/Walter_Shawlee

    Walter Shawlee (1949 or 1950 — September 4, 2023) was a renowned American collector of slide rules. He was born in Los Angeles, [1] and attended University of California, Los Angeles to study electronics engineering and mathematics, and left before completing a degree. [2] He first started a company in 1979 at Prince George, British Columbia ...