150+ Links to Sites dealing with Vintage Math Instruments,
Logarithmic Scale Based Slide Rules and Mechanical Calculators

Collector Groups and Trader Forums

The International Slide Rule Group Join this worldwide forum - free, honest advice.
the Oughtred Society (OS) Based in the United States but has international membership
Dutch Circle of Slide Rule Collectors (KRING) Multi-lingual Site of our Dutch Counter-Parts
Rechenschieber-Brief (RST) - German RST Collector Group
United Kingdom Slide Rule Circle (UKSRC) - the web site of the British Slide Rule Collectors.
The Slide Rule Trading Group Join this Yahoo Group - Good place to sell/barter/trade
ARC Friends of Slide Rules of Calculation Spanish Speaking Forum Group

Current eBay Prices: eBay Slide Rule Search Courtesy of Rod Lovett

Collectors and Traders

Slide Rule Museum Mike Konshak Curator
Tina's Page Tina Cordon Collection (United Kingdom)
David's Calculating Sticks David Rance Collection and Technical Papers (The Netherlands)
Rod Lovett's Slide Rules Rod Lovett Collection and Resources (UK)
Instrumentos de Calculo Coleccion Casteres - Guillermo Castarés (Argentina) (Spanish Language)
CALCOLATORIA - computing before the digital era - Nicola Marras Collection - Italy (Italian and English)
Photocalcul - Gonzalo Martin Collection - France (French and Spanish)
Reglas de Calculo - Jorge Fabregas collection (Spanish )
Historie rekenlinialen en rekenschijven, historie of slide rules - A.M. (Dries) Molen Collection - Netherlands (Dutch and Spanish)
Slide Rule Zone - GuiSheng Xu Collection, Shanghai, China (English and Chinese)
French & European Slides Rules and Planimeters - Daniel Toussaint Collection (French)
Mathematical Instruments - David Riches's Collection (UK)
Slide Rule Annex - Atshushi Tomozawa's Collection (Japan)
Keisanjyaku - Kimura Satoru Collection (Japan)
Bob's Slide Rule Site - Robert Adams's Collection (Australia)
The Slide Rules Giovanni Pastore Collection - English (Italy)
Dave's Slide Rules! Dave Van Domelen Collection
Dave Crate's Quality Slide Rules Dave Crate's Collection
K&E Catalog Collection of Clark McCoy
Russian_Slide Rules Sergei Frolov Collection (Russia)
Slide Rules & Mechanical Calculators Images from my collection. (Italy).
Slide Rule Ron Manley's Site, Collection, Past Prices, Resources.
Slide Rules Cal Clifford Collection
Peter Holland's Slide Rules (Germany)
Prof.Dr.-Ing.C.-M.Hamann Collection (Germany)
Slide Rule Guy's Home Page Jay Francis Collection
Eric's Slide Rule Site Eric's Marcotte's Collection and Resource (Canada)
Otis King's Patent Calculator Run by Dick Lyon (USA)
Ron Manley's Slide Rule Site Ron Manley Collection (UK)
Slide Rules and Calculators Chris Gillings Collection
Greg's Slide Rules Greg Scott Collection (Australia)
John Wolff's Web Museum Mechanical Calculating Devices (Australia)
Slide Rules Kent Walker Collection
Slide Rules Todd Tolhurs Collection.
Slide Rule Universe Walter Shawlee a.k.a. Sphere Research Corp. (Canada)
Tehnolemn Timisoara Slide Rule Archive - Jim Cerny and Bob Adams Romanian slide rules.
My Slide Rules Jason Waskiewicz Collection and resource.
Museum of Pocket Calculating Devices Gerhard Wenzel Collection (Netherlands)
Chris Osburn's Calculating Instruments
Slide Rule Page John Current Collection
Collection Peter Owen (UK)
Slide Rule Trade Offer by Charles C. Benton
The Famous SlideRule Page Harry Teicher's Favorites
Slide rules in Thailand Pairin's Collection, some for sale (Thailand).
Kung's Personal Slide Rules Kung Collection (Singapore)
Slide Rules from German Manufacturers Michael Gährken (Germany)
Random Pictures of Slide Rules Tom Bullock Collection
Slide Rule On-Line Museum the collection of Dr. Joern Luetjens (Germany)
Vom_Kerbholz_zur_Curta Von Jan Myer's History of Calculators (Germany)
Calculating Machines John Wolf's Web Museum (Australia)
David Davis Slide Rule Blog A few interesting articles, Davis Collection.
La mia collezione di regoli calcolatori Scarpaz Collection (Italy) [Italian/English]
Logarlécek Albuma János Budai Collection (Hungarian Picture archive - Very slow)
List of Slide Rules Nigel Bromley Collection (UK)
Adam's Slide Rules Adam Coleman Collection - Small, but conservative (US)
MACHINES A CALCULER MÉCANIQUES Christophe Mery Collection (French/English)
Gizmology Bill Jones Collection and Home Brew Slide Rules
REGOLI CALCOLATORI E ALTRI STRUMENTI Ezio Raddi Collection (Italy)
Slide Rule Collection Giovanni Breda (Italy)
A Collectors Family Stephan Georgi Collection (Germany)
Mark's Slide Rules Mark's Math (USA)

Educational - History, Museums and Archives
Use GOOGLE Translate Tool to translate from/to French, German or...

Purdue Exhibit

Slide Rule Museum Scans, Library, Encyclopedia (USA)
The Oughtred Society Dedicated to the history and collection of slide rules
American Slide Rule Patents the Oughtred Society
John Napier by Univ of St. Andrews, Scotland.

William Oughtred by Univ of St. Andrews, Scotland.

Edmund Gunter by Univ of St. Andrews, Scotland.

Victor Mayer Amédée Mannheim by Univ of St. Andrews, Scotland.

William Oughtred by Florian Cajori,Cornell Univ Library of Historical Monographs.

John Napier Edited by Cargill GilstonKnott, Cornell Univ Library of Historical Monographs

Modern Instruments and Methods of Calculations E.M. Horsburgh, Cornell Univ Library.

Sliderule TimeLine by Classic Collectors World

The History of the Slide Rule by Denver University

Napier's Bones and the Genaille-Lucas Rulers by Brian Borchers

Museum of HP Calculators Slide Rule Page

Cylindrical Slide Rules HP Museum

Sphere Research Slide Rule Archives Depository of contributions from many collectors

Hemmi Catalogue Raisonne Paul Ross' listing of every model Hemmi slide rule from 1912 to 1975

Japanese Slide Rules History, Patents and modern collecting in Japan by William Lise

Ron Manley's Slide Rule Site Large Resource, Excellent for past eBay prices

Eric's Slide Rule Site Eric's Marcotte's Resources. Check out his "Evolution of a Slide Rule".

Zooming Out by Armagh Astropark, the logarithmic scale in relation to astrophysics

Mechanical Calculators prior to the 19th Century by Paul E. Dunne

Calculating Devices - Predecessors of the slide rule Kenyon College Other Instruments

Napier's Bones by Marcus Brooks

Vom Kerbholz zur Curta Von Jan Myer's History of Calculators (Germany)

Exposition Machines A Calculer Exhibition of Mechanical Calculators by Christophe Mery (French)

Original Documents on the History of Calculators by Andries de Man

rechnerlexikon Computer Encyclopedia (German)

Pilot Balloon Slide Rules Martin Brenner (CSU, California, USA)

The Death of the Slide Rule By James Redin, About the Hewlett-Packard calculator(USA)

Slipsticks - Historic Slide Rules Macleay Museum, Curated by Julian Holland (Sydney, Australia)

Milestones - History of Thematic cartography, statistical... by Michael Friendly & Daniel Denis(Canada)

Online Register of Scientific Instruments Museum of the History of Science, Oxford(UK)

Katalog der Rechentechnischen Sammlung des Instituts für Mathematik und Informatik - Greifswald (Germany)

Addiator Big world of small calculators -by Friedrich Diestelkamp(Germany)

Handicapping Calculators Bookies and Bookmaking -by H.Layer, SFSU (USA)

A Short History of the Festus Mfg. Co. Maker of Acu-Rule slide rules - by Geo.E. Keane

Virtual Museum of Surveying History and Instruments - Ingram-Hagan & Co Surveyors

History Of Computing HOC - Nathan Zeldes Possibly Interesting Site-

Cybermuseum FilesGordon and Gwen Bell Artifacts

The First Nerd Tool, a Slide Rule Article, Discover.com, by Eric Levine

Historie rekenlinialen en rekenschijven, historie of slide rules - A.M. (Dries) Molen Collection - Netherlands (Dutch and Spanish)

CALCOLATORIA - computing before the digital era - Nicola Marras Collection - Italy (Italian and English)

Cosmic Quest Thinker - Information about the Slide Rule, Math, Science, Astronomy, and Education matters. - Brian Purcell - United States

Rechenmaschinen-Illustrated - History of Calculating machines based on the book Die Rechenmaschinen was written by Ernst Martin, 1925 in German. (English) - Herbert Schneemann and Walter Szrek

Instructions, Manuals, Scales and Construction
Also visit: ISRM Library

Greg's Downloadable Manuals Provided by Greg Scott
Ron Manley's Slide Rule Instructions - Downloadable manuals.
Basic Slide Rule Instructions by David G. Hicks, the HP Museum
How to make a slide rule (or log-log or semilog graph paper) by S. A. Fulling's
Explanation of Slide Rule Scales by Chris Osburn
JAVA Slide Rule Emulator. A real slide rule, digital readout of tick marks.
Slide Rule Emulator by Steve Burton
Slide Rule Calculator at CCL.NET by K. Hirayama
How a slide rule works by Peter Fox.(UK) Some simple mathematical relations.
Kung's OnLine Slide Rule BookMark - Slide rule related links.
Rechenmaschinensammlung - German site - use Google to translate.
Calculators Online Center - Jim Martindale - contains over 17,000 useful calculators.
Rechenschieber_Bibliographiert Dr. Ranier Stumpe, on-line manuals and books (German).

Rechenschieber by Universität Würzburg (German)

Use of Slide Rule as a Teaching Tool - by Martin Cohen.

NASA Explores - Slide Rule - NASA - Lesson plan to learn the function of slide rule

Homemade Slide Rules - Robert Munafo's Obsession - good information as well

AntiQuark - Derek Ross's Virtual Slide Rule Gallery - Pickett 904, 909, N4, 525, N600 emulated

What Can You Do With A Slide Rule? - The University of Utah

Commercial Seller's, Traders, Antique Dealers.

eBay - Search for slide rule, sliderule, slide ruler, slide rules, etc. 's current listing of slide rule auctions.
Concise Slide Rules On-Line Shop - The only existing manufacturer left, shipping circulars from Japan.
Sphere Research Slide Rule Universe Marketplace - Walter's place. Good variety, shipping from Canada.
Rose Vintage Instruments - Tag what you are interested in and Dick sends back a price list .
The Gemmary's Slide Rules - Prices but no pictures.
Calculator Museum - Hans Bloemen sells slide rules to pay for led calculators (Netherlands).
David Crate's Quality Slide Rules - David Crate, complete mint sets to "gently-used slide rule classics"!
Slide Rule Trading Co. - Paul Ross sells slide rules and repair parts, cases, books and ephemera with emphasis on Hemmi and Frederick Post products.
Gilai Collectibles - Calculating and Scientific Instruments.
Indian Creek Antiques & Collectables - Slide rules, calculators and books.
Antiques of Science and Technology - Rare Finds, Big $$ - Jim and Rhoda's
D'Antiques - Mechanical Calculating Devices, Slide Rules and Books for sale
Patented Antiques - Antiques of a Mechanical Nature Larry and Carol Meeker - Wide variety

MATERIALE DISPONIBILE - Regoli Calcolatori - Umberto Cordier - Slide rules for sale(Italy)