Slide Rule Info
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About the OS
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 24 years it has evolved to an
international organization with members in 22 countries. It is noted for its
Journal of the Oughtred Society, published twice annually.
Calendar of Events
Colin Barnes (1940-2016), one of the most famous names in slide rule collecting passed at the age of 76.
Colin Barnes was a founding member of the United Kingdom Slide Rule Circle (UKSRC). He was the inspiration and original editor of Skid Stick, the thrice yearly UKSRC newsletter as well as the annual UKSRC Slide Rule Gazette and someone who has been a part of the international slide rule collecting fraternity for over three decades. Colin was a Fellow of the Oughtred Society and Oughtred Society Award winner in 1996 and JOS contrubutor. More on Memoriam page
Archive of Collections A new feature of this site and is a new service of The Oughtred Society, where we present the collections of members, including images
and descriptive information for all items in the collections. These collections will be preserved on the Oughtred Society web site for posterity and for viewing by slide rule enthusiasts around the world.
The first collection is that of the late Tom Wyman. Depicted in the Archive are 339
items from this great collection. You can view a thumbnail and brief description of
each item in a large display on the starting page. Then click on any thumbnail image
and view a page with Images and Details. This collection is dynamic and may expand
in the future. Watch for notices here.
We invite you to view this new Archive of Collections and consider having us post your collection to the OS website for posterity. If needed, please contact us for suggestions on scanning or photographing your slide rules, creating thumbnail images, and the descriptive information you will need to create a complete online display. Send Email to firstname.lastname@example.org
The Oughtred Society 2015 Hall of Fame.
In 2015, in Burlingame, California, it was
announced at the IM2015 that Ed Chamberlain (USA) and Chris Hakkaart(NL) were given the
Oughtred Society Award. and eight Fellowships were added to the rolls:
Steven Casey (US),
John T Catlow (UK),
Tina Cordon (UK),
Andries de Man (NL),
Nicola Marras (IT),
Brian A Purcell (US),
César Quiroz (US), and
Nathan Zeldes (IL).
All About Slide Rules is a free 25mb PDF download of the 2nd Edition of the highly acclaimed Oughtred Society Slide Rule Reference Manual. (See more about the Manual HERE).
The Slide Rule Technical Cultural Heritage, This Oughtred Society reprint of IJzebrand Schuitema's classic is a must have for the serious slide rule collector or enthusiast. This book succeeds in sharing with the reader the vast knowledge and experience of Dutch collector Schuitema from his 20-year quest for slide rules. Included are descriptions of a variety of specialty slide rules from various countries, an overview of slide rule history and patents, ideas for exhibiting, and information about three European manufacturers. Much of his collection of over 3,000 slide rules and extensive library resides at the Arithmeum Museum in Bonn, Germany.
English, Perfect Bound, 8.5" x 11", 272 pages, 30 in full color, 29 ounces. $35.00 plus shipping.
JOS DVD is available for sale, containing 22 years of the Journal of the Oughtred Society in PDF format. OS members and non-members(individuals and institutions) may purchase the DVD by going to the Journal page and paying for the disk via Paypal.
A Search Facility for the Journal of The Oughtred Society awaits your use.
(See Journal Search in main menu at left.)
This new Search Facility displays high resolution PDFs of Journal articles.
You may search by several methods -- author, title, keyword, or for any word that appears in any article, or for all articles in a given year, etc.The search facility was created by Rod Lovett.
Collectanea de Logarithmis
For more than ten years Klaus Kühn has studied the history of logarithms and
of logarithmic tables. At the IM2013 meeting in Berlin he presented the results
of his study, packaged in a tool called Collectanea de Logarithmis (Collected
Works Concerning Logarithms). The tool gives access to thousands of tables, articles, books, and other
publications on history of the invention, calculations, tabulations and applications
of logarithms from Early Modern Age until the present - 2014 being the quadri-
centennial anniversary of Napier's first book on the logarithm, Mirifici
Logarithmorum Canonis Descriptio. The tool consists of a DVD with a USB-stick protection "dongle", giving access
to an online database. Collectanea de Logarithmis can be purchased at €50
from Klaus Kühn. More Information
- Recent books on slide rules are:
More details on the Resources Page.
- Joint Slide Rules, by Peter Hopp
- Pocket Watch Slide Rules, by Peter Hopp
- Otis King Calculators, a History of Production 1920-1977, by Colin Barnes and Tedford White
- Rechenschieber-Slide Rules, A.W.Faber, A.W.Faber-Castell, by Peter Holland.
Request for Articles
for 2016 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. See NEWS ARCHIVES.
JOS Plus is the website location
where supplemental material appears for articles
in the Journal of the Oughtred Society. View these supplemental materials by going to
- NEWS ARCHIVES - Past announcements and news.
Publications of the Oughtred Society
22 years on one disk
The Slide Rule Technical Cultural Heritage
by IJzebrand Schuitema
Calculating With Tones
K&E Slide Rule History
Slide Rule Reference Manual
Pocketbook of Gauge Marks