Web Directory

» 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/

» 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

» Eric Marcotte, a Slide Rule Collector
   A personal compilation of information on slide rules with much information on his own collection.
   http://www.sliderule.ca/

» 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

» 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

» House of Slide Rules
   Large categorised collection with photos and notes.
   http://foraker.research.att.com/~davek/slide/

» IM2001 - 7th International Meeting for Slide Rule and Calculating Machine Collectors
   Munich, Germany, September 14 - 16, 2001.
   http://www.rechenschieber.org/

» Model 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.
   http://pages.sbcglobal.net/limeybob/

» Napier's Bones and the Genaille-Lucas Rulers
   Presents Napier's Bones and the Genaille Lucas rulers in ready to print forms: Postcript and PDF.
   http://www.nmt.edu/~borchers/napier/napier.html

» 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

» Peter Holland's Slide Rules
   In German and English. Items for trade with descriptions of condition.
   http://www.peterholland.de/

» Peter Owen, Collector of Slide Rules
   Texts and photographs.
   http://homepages.tesco.net/physics/

» Slide Rule Collection
   Todd Tolhurst describes his collection, some with pictures.
   http://www.toddtolhurst.com/sliderules/index.html

» 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/

» Slide Rule Trade Offer
   An offer to trade kite aerial photographs for slide rules.
   http://www.arch.ced.berkeley.edu/kap/background/kapoffer.html

» 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

» 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

» Slide Rules and Calculators
   Images grouped by type.
   http://chris.gillings.com/collect/slide/index.html

» Slide Rules from German Manufacturers
   A collection of slide rules, with descriptions and pictures. Also, some links to other slide rule sites.
   http://www.gaehrken.de/sr/index-e.html

» SlideRule Trading Group
   Private trading for members of the group.
   http://groups.yahoo.com/group/sliderule-trade/

» 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

» Sphere Research's Learning about Slide Rules Site
   Repository for information, pictures, history and links to sellers, other sites and experts, and an online store.
   http://www.sphere.bc.ca/test/2learning.html

» Sphere Research's Slide Rule Universe
   Online sales and swap meet. Private individuals only.
   http://www.sphere.bc.ca/test/swap.html

» 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

» The International Slide Rule Group at Yahoo!
   A community of slide rule enthusiasts. Several hundred posts a month.
   http://groups.yahoo.com/group/sliderule/

» The Oughtred Society
   Membership group dedicated to the history and collection of slide rules.
   http://www.oughtred.org/

» 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/

» 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

» The Sphere Research Slide Rule Archives
   Slide rule model information, pictures, and history from all over the world.
   http://www.sphere.bc.ca/test/2archives.html