slide rules

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• - Private trading for members of the group.
  
• - Texts and photographs.
  
• - A personal compilation of information on slide rules with much information on his own collection.
  
• - Slide rule model information, pictures, and history from all over the world.
  
• - Site for Jay Francis, a collector of slide rules and antique mechanical calculators. Items for sale or trade, and many related links.
  
• - Assorted slide rules for sale as well as some historical information.
  
• - Hyperlinked essay with citations by James Redin covering the rise of the portable calculator and the demise of its predecessor.
  
• - Custom slide rule for sale. Online calculations which cover the same functions available on the site. Manual included with the slide rule.
  
• - Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's.
  
• - A private collection of slide rules in excess of 500 different items scanned full size and categorized by company or continent. Also offers a comprehensive glossary of slide rule terms.
  
• - Membership group dedicated to the history and collection of slide rules.
  
• - Slide rules and planimeters for sale.
  
• - Images grouped by type.
  
• - Explanation of slide rule scales, FAQ about buying and selling rules, and a description of his collection.
  
• - Extensive on line archive of slide rule information, plus a catalog of available rules.
  
• - Probably the most complete collection of Otis King's Patent Calculator (cylindrical slide rule) information on-line.
  
• - Features some slide rules used in early American and Soviet space programs.
  
• - Todd Tolhurst describes his collection, some with pictures.
  
• - Pictures and descriptions of a number of slide rules.
  
• - Munich, Germany, September 14 - 16, 2001.
  
• - Archives of photos of large personal collection.
  
• - Comprehensive annotated collection of links.
  
• - List of collected sliderules.
  
• - 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.
  
• - 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.
  
• - Relates a story about how one person found a giant cache of new-in-box slide rules.
  
• - Presents Napier's Bones and the Genaille Lucas rulers in ready to print forms: Postcript and PDF.
  
• - Hyperlinked essays about slide rules and related tools, and some copyrighted downloadable files for making one's own slide rules.
  
• - Large categorised collection with photos and notes.
  
• - Collection of Wolf-G. Blümich. Berlin, since July 1998 periodically updated. Bilingual [mostly German, but some English].
  
• - Repository for information, pictures, history and links to sellers, other sites and experts, and an online store.
  
• - A community of slide rule enthusiasts. Several hundred posts a month.
  
• - A collection of slide rules, with descriptions and pictures. Also, some links to other slide rule sites.
  
• - Online sales and swap meet. Private individuals only.
  
• - Slide rules bought, sold and traded.
  
• - Pickett Slide rules forsale. New in the box and many models available from the pocket size to 4 foot teaching rules.
  
• - An offer to trade kite aerial photographs for slide rules.
  
• - In German and English. Items for trade with descriptions of condition.
  
• - A hyperlinked history of slide rules, details of the author's personal collection, and contact information.
  
• - Front and back mages of some slide rules for sale.
  
• - Instructions on use of slide rules, and a guide to the price of slide rules.