The International Slide Rule Group "ISRG" is devoted to collectors of slide rules and associated mechanical calculating instruments.
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If you are serious about slide rule collecting, it is highly recommended that you consider joining
The Oughtred Society.
Brought to you by: This is your groupowners attempt at humor.
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.
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