Slide Rules

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/

David Crate's Slide Rules
Assorted slide rules for sale as well as some historical information.
http://www.amug.org/~puppy/

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

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

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

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

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

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

Kung's OnLine Slide Rule Bookmarks
An annotated collection of links.
http://www.geocities.com/kungyiji/srule.htm

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

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

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

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/

Slide Rule Instructions and Prices.
Instructions on use of slide rules, and a guide to the price of slide rules.
http://www.sliderules.clara.net/

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 Page
Archives of photos of large personal collection.
http://home.att.net/~jcurrent/srule.htm

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

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

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

Slide Rules in Thailand
Front and back images of some slide rules for sale.
http://www.geocities.com/ipairin/

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

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

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