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  • Re: Strange Stopwatch

    The technique you describe for measuring the tension in in aerial lines is well known in telecomm circles- It was a standard method for doing that test and

    dave9bro 2 days ago
  • Re: Strange Stopwatch

    Paul, I work at an electric utility, and I asked a co-worker if he had ever heard of a Sag Watch. He had not only heard of them, but he used to use one when he

    jdclrk@swbell.net 2 days ago
  • Re: Slide rule beginnings in China

    Hello Jose, There is an article by Peter Hopp on this topic.You can read here if there was a slide rule before Oughtred or not:

    phollandde 2 days 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:


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

  • 1623
  • Mathematics
  • Dec 21, 1998
  • English

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