The Oughtred Society was founded in 1991 by a group of slide rule collectors and is dedicated to the preservation and history of slide rules and other calculating instruments. In the past 22 years it has evolved to an international organization with members in 22 countries. It is noted for its highly acclaimed Journal of the Oughtred Society, published twice annually. Continued …

• June 29, 2013 - Twenty-second Annual OS West Coast Summer meeting. Mountain View, California. Computer History Museum. Oughtred Society Members are invited to attend. Non-members welcome!. $90 before June 9. Click here for Details and Registration.
• Call for Papers - IM 2013 International Meeting of Collectors and Researchers of Slide Rules and other Computing Instruments hosted by the German RST in Berlin, Germany. Oughtred Society members are encouraged to submit a presentation and attend the meeting. Details (English and German) - PDF

• The 2013 Oughtred Society Winter Meeting and Auction was held in Tucson, Arizona on February 16, 2013, at the world-renowned Pima Air and Space Museum. Peruse the Meeting Report (1.36MB PDF) by hosts Richard Davis and Martha Prince.

• 2013 Membership renewal - REMINDER! Its that time of year to renew your membership, which runs for the calander year, January 1st through December 31,. Don't miss out on the next Journal publication. You can sign up for auto-renewal, where you'll be billed at the beginning of every year through Paypal, This option is only available through the end of March.
• Rarities Gallery - Check out the new gallery in the menu which has rare examples of slide rules belonging to members of the Oughtred Society.
• All About Slide Rules an Oughtred Society Publication, is now available for downloading (25.4 Mb PDF file) by all visitors to the Oughtred Society. This publication is a vast amount of information about slide rules, both basic and advanced: What Is a Slide Rule and How It Works, Learning Your Way Around a Slide Rule, Slide Rule History, Common and Less Common Types, How to Use a Slide Rule, Tricks and Time Savers, 24 Common Slide Rule Scales and Their Functions, Advanced Slide Rule Features, Major Makers and Some of Their Common Models, List of 75 Books and Manuals, Cleaning and Care, Slide Rules on the Internet, Collecting, ... and more. We hope that you find this information to be interesting, informative, and useful.
• The Spring 2013 (Vol 22.1) Journal will contain the following articles and more:
  • The Aristo System Czerny Slide Rule for Thermal Radiation Calculations, Seán M. Stewart
  • Coastal Navigation by Station Pointer & the Snellius Resection, Otto van Poelje
  • Danish Pig-Feeding Slide Rule, Jerry McCarthy
  • KODAK, A Nostalgia Slide Rule/Chart, Clay Castleberry
  • Suggestions for Dating pre-1920 Faber-Castell Slide Rules: an Update, Trevor Catlow
  • MARC: a French Brand of Pocket Slide Rules, Panagiotis Venetsianos
  • French Slide Rules Makers in the 19th Century From Gravet-Lenoir to Tavernier-Gravet: A Family Story, Marc Thomas
  • The Meyrat & Perdrizet (M&P) Pocket-Watch Calculator, Thomas Wyman
  • Proportional Article Addendum, Marion Moon
  • A Layman's Guide to Chemical Slide Rules, Richard Smith Hughes
  • "in Experiments, where Sense is Judge" Isaac Newton’s TONOMETER and COLORIMETER, Charles R. Adams
  • Separated by a Common Language, Colin Barnes
  • IM2012 Reports, Jerry McCarthy & Paul McConnell
  • Book Announcement Werner H. Rudowski SCHEFFELT & Co., Otto van Poelje
• The Oughtred Society 2012 Hall of Fame. The Oughtred Society is pleased to announce that George Keane has been given the 2012 Oughtred Award..
• The Oughtred Society 2013 Scholarships. The Oughtred Society is pleased to announce that it is now accepting applications for its 2013 Scholarship program which provides monies to assist with college expenses to mathematically minded students attending colleges or universities worldwide.

• Request for Articles for 2014 Journals. Be a contributing author and share your knowledge and interests. For ideas and inspiration, read "Yes, You Can Write for the Journal of the Oughtred Society" (82KB pdf).
• Current Journal of the Oughtred Society
  
  Cover, Table Of Contents, Sample page

• Sample Articles from the Journal of the Oughtred Society. The Oughtred Society is pleased to present five articles from past issues of the Journal - click the titles below to download the PDF files.

  • From 18.2 Strange Variations by Walter Shawlee (570KB)
  • From 19.2 The K&E Hudson 8 by Clark McCoy (1.24MB)
  • From 20.1 Colorful Slide Rules by Otto E. van Poelje (610KB)
  • From 22.1 Browne Fuller-Type Cylindrical Slide Rules by R. Bruce Sandie (340KB)
  • 22.1 The Meyrat & Perdrizet (M&P) Pocket-Watch Calculator by Thomas Wyman (180KB)
• JOS Plus is the website location where supplemental material appears for articles in the Journal of the Oughtred Society. In the current JOS issue, Vol. 21, No. 2, Fall 2012, there are two such articles. View these supplemental materials by going to JOS Plus.
• NEWS ARCHIVES - Past announcements and news.

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last modified April 25, 2013