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| | Calculators - Computers, Collecting, Recreation 37
Slide Rules - Education, Math, Science 14
History - Math, Science 109
Slide Rules - Calculators, Software, Math, Science 3
 Chris Osburn's Calculating InstrumentsChris Osburn's Calculating Instruments
 Classifies and lists slide rule and scales. Grouped by type, size, country of origin and manufacturer. Articles, a discussion forum and a section on buying and selling.
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David Crate's Slide RulesDavid Crate's Slide Rules
 Assorted slide rules for sale as well as some historical information.
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The Death of the Slide RuleThe Death of the Slide Rule
 Hyperlinked essay with citations by James Redin covering the rise of the portable calculator and the demise of its predecessor.
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Discovering Slide RulesDiscovering Slide Rules
 Relates a story about how one person found a giant cache of new-in-box slide rules.
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Eric Marcotte, a Slide Rule CollectorEric Marcotte, a Slide Rule Collector
 A personal compilation of information on slide rules with much information on his own collection.
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Giovanni Breda's Slide Rule CollectionGiovanni Breda's Slide Rule Collection
 Giovanni Breda shows his collection. A sheet for each rule is provided including high resolution images. Links to other collector's site are also provided.
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House of Slide RulesHouse of Slide Rules
 Large categorised collection with photos and notes.
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HP Museum - Early CalculatorsHP Museum - Early Calculators
 Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's.
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IM2001 - 7th International Meeting for Slide Rule and Calculating Machine CollectorsIM2001 - 7th International Meeting for Slide Rule and Calculating Machine Collectors
 Munich, Germany, September 14 - 16, 2001.
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The International Slide Rule Group at Yahoo!The International Slide Rule Group at Yahoo!
 A community of slide rule enthusiasts. Several hundred posts a month.
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Kung's OnLine Slide Rule BookmarksKung's OnLine Slide Rule Bookmarks
 An annotated collection of links.
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Model Aircraft Performance Slide Rule CalculatorModel Aircraft Performance Slide Rule Calculator
 Custom slide rule for sale. Online calculations which cover the same functions available on the site. Manual included with the slide rule.
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Napier's Bones and the Genaille-Lucas RulersNapier's Bones and the Genaille-Lucas Rulers
 Presents Napier's Bones and the Genaille Lucas rulers in ready to print forms: Postcript and PDF.
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Otis King's Patent CalculatorOtis King's Patent Calculator
 Probably the most complete collection of Otis King's Patent Calculator (cylindrical slide rule) information on-line.
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The Oughtred SocietyThe Oughtred Society
 Membership group dedicated to the history and collection of slide rules.
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Peter Holland's Slide RulesPeter Holland's Slide Rules
 In German and English. Items for trade with descriptions of condition.
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Peter Owen, Collector of Slide RulesPeter Owen, Collector of Slide Rules
 Texts and photographs.
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Slide Rule CollectionSlide Rule Collection
 Todd Tolhurst describes his collection, some with pictures.
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The Slide Rule GuyThe Slide Rule Guy
 Site for Jay Francis, a collector of slide rules and antique mechanical calculators. Items for sale or trade, and many related links.
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Slide Rule Instructions and Prices.Slide Rule Instructions and Prices.
 Instructions on use of slide rules, and a guide to the price of slide rules.
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Slide Rule MuseumSlide Rule Museum
 Dedicated to engineers past and present, this collection of slide rules and manuals have in excess of 1000 different items scanned full size and categorized by company or continent. Also offers a glossary of slide rule terms and links.
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Slide Rule PageSlide Rule Page
 Archives of photos of large personal collection.
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Slide Rule Trade OfferSlide Rule Trade Offer
 An offer to trade kite aerial photographs for slide rules.
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Slide Rule UniverseSlide Rule Universe
 Includes on line archive of slide rule information, plus a catalog of available rules.
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Slide RulesSlide Rules
 Dedicated to one man's collection of slide rules (and includes a photo gallery), plus a few links for those who want to find out more about them or where to buy one.
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The Slide RulesThe Slide Rules
 A hyperlinked history of slide rules, details of the author's personal collection, and contact information.
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Slide Rules and CalculatorsSlide Rules and Calculators
 Images grouped by type.
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Slide Rules from German ManufacturersSlide Rules from German Manufacturers
 A collection of slide rules, with descriptions and pictures. Also, some links to other slide rule sites.
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Slide Rules in ThailandSlide Rules in Thailand
 Front and back images of some slide rules for sale.
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SlideRule Trading GroupSlideRule Trading Group
 Private trading for members of the group.
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Space Race Slide RulesSpace Race Slide Rules
 Features some slide rules used in early American and Soviet space programs.
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The Sphere Research Slide Rule ArchivesThe Sphere Research Slide Rule Archives
 Slide rule model information, pictures, and history from all over the world.
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Sphere Research's Learning about Slide Rules SiteSphere Research's Learning about Slide Rules Site
 Repository for information, pictures, history and links to sellers, other sites and experts, and an online store.
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Sphere Research's Slide Rule UniverseSphere Research's Slide Rule Universe
 Online sales and swap meet. Private individuals only.
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Ted Hume, Slide Rule TraderTed Hume, Slide Rule Trader
 Slide rules bought, sold and traded.
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