sliderule : The International Slide Rule Group

4 New Members - 33 New Messages - 5 New Files - New Questions

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.

I just thought this picture was funny

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

Re: log logs near 1 (using FF1003) Just now I test with FF1003 It has 4 black ln scales and 4 red ln scales range move hairline to 1.003 of ln-2 scale align 3.6 on CI scale move hairline to left Posted - Fri Dec 25, 2009 8:39 am	fwonghc Offline Send Email
Re: Slide rule supports Yes, you are sure; the text disappeared from the files area! I’m sure that it was there the proof of it is the message from Matteo Munari. He found the text Posted - Thu Dec 24, 2009 1:10 am	gabbardo@... gabbardo Offline Send Email
Re: Slide rule supports I do not see such a file in the Files-area! Hubert Posted - Wed Dec 23, 2009 10:12 pm	Hubert larque1957 Offline Send Email
Re: Adjusting a Pickett N600 Hello, Like you I also thought that the pocket rules did not have springs until purchase at EBay a N600-ES with springs near the end brackets. ... De: Posted - Wed Dec 23, 2009 9:10 pm	gabbardo@... gabbardo Offline Send Email
Re: Adjusting a Pickett N600 ... Those marks stand for seconds (") and minutes (') of arc. Use them to convert small angles to radians. For example, how many radians are 5 seconds of arc? Posted - Wed Dec 23, 2009 9:06 pm	Paul Hirose paulhirose Offline Send Email
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