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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 23 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
IM2014 - September 5th and 6th, 2014 located in Delft, The Netherlands.
20th International Meeting of Collectors of Historical Calculating Instruments. Theme: Turning and Sliding. Download information: IM2014 Registration
Tom Wyman, who served as our first Oughtred Society president from 1997 to 2007, passed away in Palo Alto, CA on March 17, at the age of 86. Tom became suddenly ill on the morning of March 10 from a brain aneurysm and passed away after a short hospital stay. Tom is survived by his wife, Ellen, daughter Susan, son Tom, and four grandchildren. A memorial service will take place on April 18 at 11AM at Lucie Stern Community Center Ballroom, 1305 Middlefield Road, Palo Alto.
JOS DVD is now 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
The Oughtred Society 2013 Hall of Fame.
In 2013, Clark McCoy (USA) was given the
Oughtred Award. and five Fellowships were added to the roles: Klaus Krämer (Germany), Gonzalo Martin (France),Willy Robbrecht (Belgium), Carl Strange (USA), and
Marc Thomas (France).
- The Fall 2014 (Vol 23.2) Journal and future Journals will contain the following articles and more:
- The Deaths of the Slide Rule by Robert James
- Charles Hoare Slide Rules by Tom Wyman
- In Memoriam (Tom Wyman & Alex Green)
- My Slide Rules by Bill Wayne
- Analon Slide Rule by Cliff Frolich
- Pencil Slide Rules by Rodger Shepherd
- Collectanea de Logarithmis by Klaus Kühn
- Golding's Horse Power Computer by Stephan Weiss
- Combined Slide Rules by Panagiotis Venetsianos
- Aspect Ratios of Pictures by Otto van Poelje
- Meeting Reports
- Financial Status
- 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 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. Links forthcoming. 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
Calculating With Tones
K&E Slide Rule History
Slide Rule Reference Manual
Pocketbook of Gauge Marks