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  2. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    Pilot balloon slide rules were used by meteorologists in weather services to determine the upper wind velocities from an ascending hydrogen or helium-filled pilot balloon. [27] The E6-B is a circular slide rule used by pilots and navigators. Circular slide rules to estimate ovulation dates and fertility are known as wheel calculators. [28]

  3. 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.

  4. 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]

  5. Slide rule scale - Wikipedia

    en.wikipedia.org/wiki/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 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.

  6. Keuffel and Esser - Wikipedia

    en.wikipedia.org/wiki/Keuffel_and_Esser

    The company's showroom and office building at 127 Fulton Street in the Financial District of Manhattan K&E manufacturing complex in Hoboken, New Jersey. The Keuffel and Esser Co., also known as K&E, was an American drafting instrument and supplies company founded in 1867 by German immigrants Wilhelm J. D. Keuffel and Hermann Esser.

  7. 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 ...

  8. Talk:Slide rule/Archive 2 - Wikipedia

    en.wikipedia.org/wiki/Talk:Slide_rule/Archive_2

    In the late 1970s when the slide-rule market collapsed, some people bought cases of slide-rules for pennies on the dollar (or got them for free if they were employees) as the manufacturers were going out of business. Those people are now senior citizens selling their antique slide-rules on eBay to collectors for huge profits.

  9. Coggeshall slide rule - Wikipedia

    en.wikipedia.org/wiki/Coggeshall_slide_rule

    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 the dimensions, surface area, and volume of timber. With his original design and later improvements, Coggeshall's slide rule brought the tool its first practical use outside of mathematical ...