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» Chris 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.
http://sliderule.mraiow.com/
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» David Crate's Slide Rules 
Assorted slide rules for sale as well as some historical information.
http://www.amug.org/~puppy/
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» Discovering Slide Rules 
Relates a story about how one person found a giant cache of new-in-box slide rules.
http://www.sphere.bc.ca/test/discover.html
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» Giovanni 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.
http://www.sliderule.it
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» HP Museum - Early Calculators 
Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's.
http://www.hpmuseum.org/prehp.htm
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» House of Slide Rules 
Large categorised collection with photos and notes.
http://foraker.research.att.com/~davek/slide/
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» Otis King's Patent Calculator 
Probably the most complete collection of Otis King's Patent Calculator (cylindrical slide rule) information on-line.
http://www.svpal.org/~dickel/OK/OtisKing.html
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» Slide Rule Collection 
Todd Tolhurst describes his collection, some with pictures.
http://www.toddtolhurst.com/sliderules/index.html
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» Slide 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.
http://www.sliderulemuseum.com/
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» Slide Rule Page 
Archives of photos of large personal collection.
http://home.att.net/~jcurrent/srule.htm
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» Slide Rule Trade Offer 
An offer to trade kite aerial photographs for slide rules.
http://www.arch.ced.berkeley.edu/kap/background/kapoffer.html
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» Slide Rule Universe 
Includes on line archive of slide rule information, plus a catalog of available rules.
http://www.sphere.bc.ca/test/sruniverse.html
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» Slide 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.
http://www.eyrie.org/~dvandom/slide/index.html
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» Space Race Slide Rules 
Features some slide rules used in early American and Soviet space programs.
http://www.nasm.si.edu/galleries/gal114/SpaceRace/sec300/sec320.htm
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» The 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.
http://www.dotpoint.com/xnumber/hp.htm
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» The Oughtred Society 
Membership group dedicated to the history and collection of slide rules.
http://www.oughtred.org/
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» The 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.
http://www.slideruleguy.com/
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» The Slide Rules 
A hyperlinked history of slide rules, details of the author's personal collection, and contact information.
http://www.giovannipastore.it/index_english.htm
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This category needs an editor Last Updated: 2008-05-05 07:45:25
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