Loading ...
Sorry, an error occurred while loading the content.
  • Back
  • About Group

  • Join Group
1 member, 46 messages added in the last 7 days
New MessagesSee All
  • K+E 4041F

    I recently acquired a K+E 4041F. The body is 10+5/8" long, two piece. At the bottom edge of the front face, in red ink, is "KEUFFEL & ESSER CO. N.Y.". The

    1 hour ago
  • Re: Revived Japanese Slide Rule site

    Hello Bill, When I try the web http://www.lise.jp http://www.lise.jp you use, there is an add saying the web is for sale... Nevertheless, the access that Dick

    e_lento13 1 hour ago
  • Re: Logarex 27406 Finlog

    Good point! " From 1948 to 1950 Logarex belonged to L&C Hardtmuth, which made the Koh-I-Noor brand pencils". So, no dependence from "before WWII" to 1948 and

    e_lento13 10 hours ago
Fetching Sponsored Content...

Group Description

The International Slide Rule Group "ISRG" is devoted to collectors of slide rules and associated mechanical calculating instruments.

You may contact the listowner at:


To subscribe, send an email to:


If you are serious about slide rule collecting, it is highly recommended that you consider joining

The Oughtred Society.

Brought to you by:

Cyril Catt  - 
Andrew Davie  - 
Gary Flom  - 
Craig Kielhofer  - 
Jerome Mc Kenna

Slide rules are THE ORIGINAL solar powered calculators. Try using one in the dark and you'll see I'm right, or not see as the case may be.

This is your groupowners attempt at humor.

Group Information

  • 1558
  • Mathematics
  • Dec 21, 1998
  • English

Group Settings

  • This is a restricted group.
  • Attachments are not permitted.
  • Members cannot hide email address.
  • Listed in Yahoo Groups directory.
  • Membership requires approval.
  • Messages require approval.
  • All members can post messages.

Message History