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 20 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 …

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• September 21-23, 2012 IM 2012 - 18th International Meeting of Slide Rule & Historic Calculating Instrument Collectors "SLIDE RULES for the TRADES". The UK Slide Rule Circle is pleased to again host this regular annual event. This will be held at Bletchley Park, home of the wartime codebreakers. Our main meeting will take place in the Library of the historic Victorian Mansion. See further information under "meetings".

  Click here for printable Information. 396Kb PDF

  Click here for IM2012 Registration Form 27Kb PDF

• February 25, 2012 Winter Meeting will be held at the Gene Autry Museum in Griffith Park in Los Angeles, California. Note the new meeting location. Download preliminary ANNOUNCEMENT

  Click here for Details and Registration.

• 2011 Awards & Fellowships were announced at the IM2011 held in Boston, USA - go to the OS Awards webpage to see who the 2011 OS Award went to and which members were honored with a Fellowship.
• Second edition of the Pocket Book of the Gauge Marks by P. Venetsianos.
  From 2006 through 2010, new members of the Oughtred Society were pleasantly surprised to receive with their very first Journal a complimentary copy of the Pocket Book of the Gauge Marks by Panagiotis (Pano) Venetsianos. The booklet contained some sixty pages of gauge marks, the special marks along slide rule scales for often-used constant values.
  The Oughtred Society is out of stock of these original booklets; however, Pano has now published under the aegis of the Oughtred Society a second edition of the booklet, greatly extended to more than 140 pages. This new version is available for sale to ALL slide rule collectors at the no-profit cost price. The Internet on-demand publishing service Lulu has been chosen to produce and ship the second edition booklets. The initial price is $8.94 excluding shipping (typically $3.99 USPS).
  To order a copy go to lulu.com and search for books in the English language using the keyword "venetsianos".
• Request for Articles for 2012 Journals. Be a contributing author and share your knowledge and interests.

• Sample Articles from the Journal of the Oughtred Society are available for viewing. The Oughtred Society is pleased to present five articles from recent issues of the Journal - click the titles below to view five articles. In the current JOS issue, Vol. 20, No 2, Fall 2011, there are eighteen such articles.

  • A.W.Faber Model 343 System Baur Slide Rule - by Peter Holland of Germany
  • A Brief History of the Aristo Studio Slide Rule - by John Mosand of Trondheim, Norway
  • Public Display of Your Collection - by Clay Castleberry of Oroville, California
  • John R. Dempster, The Remarkable Dempster RotaRule, and the Extraordinary Dempster Family - by W. Richard Davis of Las Vegas, Nevada
  • Suggestions for Dating pre-1920 Faber-Castell Slide Rules - by Trevor Catlow of Kent, United Kingdom

• Message Board - We now have a way to communicate with each other on a secure Message Board: Use this forum to read or post messages for exchanging information. You must be a current OS member and log-in to post messages. Give it a try!

• 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. 20, No. 2, Fall 2011, there are four such articles. View these supplemental materials by going to JOS Plus.
• The UKSRC has announced that the UK's largest public exhibition of slide rules has been unveiled at The National Museum of Computing at Bletchley Park, the specimens being contributed by the members of UKSRC. News anouncements may be seen at MKNEWS and PCW's Labs. The members of the Oughtred Society wish to congratulate UKSRC for this achievement in bringing slide rules to the British public.

• A comprehensive Index for the Journal of the Oughtred Society has been added to the Journal section of this website. This Index was compiled by Oughtred Society member Barry Dreikorn. Many thanks to Barry for this monumental and extremely useful piece of work! The Index provides Article title, Author's name, Item number, Page number, Article Summary and a Keyword list. It is fully searchable. Click JOURNAL here or in the main menu at left.

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last modified January 26, 2012