sliderule : The International Slide Rule Group

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

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

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Brought to you by:

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

SV: SR Antique mall trip This is a Dennert & Pape, made before 1936. From then on, D&P used ARISTO as their trade mark. They made about 150 different models 1872-1935. If it is a 4", Posted - Mon Nov 9, 2009 12:54 pm	John Mosand jomosand Offline Send Email
Re : Antique mall trip part 2 Reply to Charlie Oxford --- re Post 1446D slide rule The Post 1446D was labeled for Post by Lawrence Engineering during WWII. It is a Lawrence 250-BT and is Posted - Mon Nov 9, 2009 3:24 am	Ted Hume tedrhume Offline Send Email
Re: SI Scale Hi Bob, I love a challenge! It's a stretch, but.... How about calculating ground speed (magnitude) given air speed and wind speed as vectors (magnitude & Posted - Mon Nov 9, 2009 3:04 am	duanecroft Offline Send Email
Re: SI Scale Hi, Bob, if you add a TI scale, then you will find them useful for doing complex number calculations using proportion. The DI scale has superseded this. There Posted - Mon Nov 9, 2009 2:18 am	sliderulenut Offline Send Email
Antique mall trip part 2 I forgot to mention the Post 1446-D made in USA looking a lot like a K&E wood beginner rule except inch and cm scales on edges. Anyone know this one? Posted - Mon Nov 9, 2009 2:07 am	Charles Oxford cjoxford2 Offline Send Email
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