Where is the international slide rule Museum?
1944 Quail Circle, Louisville, CO
Mail checks or donated items to: ISRM, 1944 Quail Circle, Louisville, CO 80027, USA.
Do slide rules still exist?
Slide rules are still commonly used in aviation, particularly for smaller planes. They are being replaced only by integrated, special purpose and expensive flight computers, and not general-purpose calculators.
Are slide rules worth anything?
The rarest slide rules are 19th Century hand-engraved instruments such as Palmers Computing Scale (a circular model), first published in 1843, or the cylindrical ‘Thacher’s Patent Calculating Instrument’ slide rules produced by Keuffel and Esser Co in the 1880s. These can run close to $1,000 in good condition.
Can you buy a new slide rule?
There are many pages about slide rules on the web, and you can still buy brand new slide rules (40 years old but never used, and still in their factory supplied box) in various places.
Who made the best slide rules?
OTIS KING, a London engineer, wrapped several feet of scales around a pocket-size cylinder in 1921 to achieve a portable slide rule with impressive resolution. FABER-CASTELL 2/83N slide rule is considered by some to be the finest and most beautiful slide rule ever made.
What is the modern slide rule?
The slide rule, or slipstick, is a mechanical analog computer. The slide rule is used mainly for multiplication and division, and also for “scientific” functions such as roots, logarithms and trigonometry, but usually not for addition or subtraction.
When was the last slide rule made?
July 11, 1976
Slide rules became increasingly popular in the 1950s and 1960s, before beginning to fall out of favor to pocket calculators, which, by the mid 1970s, had become affordable and were considered significantly easier to use by the masses. The last slide rule manufactured in the United States was produced on July 11, 1976.
How much did a slide rule cost?
Yes, the slide rule was a powerful tool until the early l970s, when things began to change. On February 1, 1972, Hewlett-Packard introduced the HP-35, regarded as the first successful scientific pocket calculator. It sold for about $395.
Where can I donate slide rules?
To contribute Support International Slide Rule Museum. When you shop at smile.amazon.com, Amazon donates.
What slide rule did Einstein use?
Einstein favored a Nestler slide rule in his work.
What slide rules did NASA use?
In addition, crews carried a slide rule for more routine calculations. NASA chose a 5-inch, metal rule, model “N600-ES,” manufactured by the Pickett Company for their use. It was a model that was popular among engineers, scientists and students at the time. No modifications were needed for use in space.
What replaced the slide rule?
The slide rule remained an essential tool in science and engineering and was widely used in business and industry until it was superseded by the portable electronic calculator late in the 20th century.
What is the best slide rule?
FABER-CASTELL 2/83N slide rule is considered by some to be the finest and most beautiful slide rule ever made. but the cheapest slide rules displayed squares and roots; most also computed cubes, cube roots, inverses, sines and tangents.
What invention led to the slide rule?
A calculating tool, the invention of the slide rule was made possible by John Napier’s invention of logarithms, and Edmund Gunter’s invention of logarithmic scales, which slide rules are based upon.
Who invented slide rule?
William OughtredSlide rule / Inventor
Did Einstein use a slide rule?
What do Isaac Newton, Thomas Jefferson, Albert Einstein, and Apollo astronauts have in common? They all used slide rules! We’re highlighting some of the slide rules in our collection used by scientists at the NIH in their quest to improve human health.
Who invented slide rule when?
About 1622, William Oughtred (Figure 1, right), an Anglican Minister, today recognized as the inventor of the slide rule in its actual form, by placing two such scales side by side and sliding them to read the distance relationships, thus multiplying and dividing directly. He also developed a circular slide rule.