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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 26 years it has evolved to an international organization with members in 19 countries. It is noted for its highly acclaimed Journal of the Oughtred Society, published twice annually. The Society is a non-profit educational organization. Society goals include the dissemination and sharing of information and encouragement for collectors. We are affiliated with organizations in the United Kingdom, Germany, The Netherlands and Italy. Our activities are carried out by members who volunteer to do various tasks and projects. Membership is open to anyone. Click "Membership" in the left navigation menu for more information about member activities and benefits.

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Publications of the Oughtred Society

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JOS DVD
JOS DVD
26 years on one disk

The Inventor of the CURTA Calculator
The Inventor of the
CURTA Calculator

Pencil Slide Rule Book
Pencil Slide Rules

SchuitemaBook
The Slide Rule Technical Cultural Heritage
by IJzebrand Schuitema


Calculating With Tones
Calculating With Tones

K&E Slide Rule History
K&E Slide Rule History

Slide Rule Reference Manual
Slide Rule Reference Manual
2nd Edition

Pocketbook of Gauge Marks
Pocketbook of Gauge Marks
2nd Edition


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last modified October 07, 2017