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1 member, 23 messages, 3 photos added in the last 7 days
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  • Help with dating my Deci-Lons

    The serial numbers on my two K&E 68 1100 Deci-Lon slide rules don't seem to fit the production date graph posted on the International Slide Rule Museum's

    also_nc 9 hours ago
  • Slide rules of famous people?

    Is there anywhere a list of the slide rule models used by various famous and notable people? Mark McCormick

    msmccor100 1 day ago
  • Re: Collection data-base software freeware.. try this?

    I mentioned earlier that I use a text file for my slide rules. For other purposes, especially where I want an organized file to distribute, I use the table

    mngwright 1 day ago
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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:


sliderule-owner@yahoogroups.com



To subscribe, send an email to:


sliderule-subscribe@yahoogroups.com.




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

  • 1557
  • Mathematics
  • Dec 21, 1998
  • English

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