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 25 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.
2017 Membership Renewal! If you have not already renewed your Oughtred Society membership please do so. Membership is on a calendar year basis, i.e. January 1st through December 31.
If you renew now you will receive both the Spring and Fall issues of the Journal.
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.
Oughtred Society Annual Meeting - April 29, 2017
The Oughtred Society 2017 Annual Meeting will be held in Las Vegas at the Atomic Testing
Museum on April 29, 2017. Cost is $45/person (spouse is free). The host hotel is the Four Points by Sheraton Las Vegas East Flamingo across the street from
the museum. The OS has a group rate of $99/night for Friday and Saturday nights. The meeting will feature displays of slide rule collections, an auction,
buying, selling and swapping, two live presentations and the opportunity to meet and talk with fellow slide rule enthusiasts, many of whom are experts
in their areas of interest. Additional items from the Thomas Wyman collection will also be offered at the auction. Optional group dinners will be held
on Friday and Saturday evenings at the hotel in a private meeting room - food will be catered by Buca di Beppo
The main hotel for our April 29, 2017 Oughtred Society meeting will be The Four Points by Sheraton Las Vegas East Flamingo, where we will be holding dinner
both nights. After some initial set-up issues, the hotel should be ready to accept reservations at the special Oughtred Society rate of $99 per night for Friday
and Saturday nights. This rate will be available until March 29, 2017. See the meeting announcement for additional nights.
See Details and Registration. and REGISTER NOW!
IM2016 Meeting Report:
The 2016 International Meeting of the Oughtred Society was held in Trento, Italy on September 16 to 18, 2016. It was hosted in the Science Museum MuSe of Trento
and by all accounts was a very interesting and successful meeting with 37 people in attendance.
2016 Oughtred Society Annual
Meeting Report:The Oughtred Society Annual Meeting for 2016
was held at the Atomic Testing Museum in Las Vegas, NV and featured a great day at the museum with fascinating displays, four presentations, two very
nice dinners, and many interesting items at auction and for sale.
OS Webmaster Retires: Mike Konshak, long time webmaster for the Oughtred Society, has retired and will be replaced
by Richard Davis and Clark McCoy. The Oughtred Society would like to thank Mike for his many years of service. Mike will
continue to operate his excellent International Slide Rule Museum website.
The Oughtred Society is proud to present two additonal slide rule image galleries -
one devoted to Hyperbolic Slide Rules and one devoted to
Long Scale Slide Rules
Both sites were developed by Rod Lovett based on Bill Robinson's Hyperbolic slide Rule Spreadsheet and Ed Chamberlain's
Long Scale Spreadsheet, respectively.
Colin Barnes (1940-2016), one of the most famous names in slide rule collecting passed away 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 433
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 2016 Hall of Fame.
In 2016, in Trento, Italy, it was
announced at the IM2016 that Günter Kugel (Germany) was given the
Oughtred Society Award. and four
Fellowships were added to the rolls:
Herbert Bruderer (Germany),
Jose Fernández (Spain),
David Walker (United Kingdom),
David Siminovitch (Canada).
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.
- Meilenstein der Rechentechnik by Herbert Bruderer.
- 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 2017 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