[NSRCA-discussion] Slide Ruler,,,,was Art Wagner

[Duane Beck]

Apparently, William Oughtred in the 1630's.
http://en.wikipedia.org/wiki/Slide_ruler#History
http://mysite.du.edu/~jcalvert/tech/slidrul.htm

-------------- Original message -------------- 
From: rcmaster199 at aol.com 


Anyone know who invented the thing??
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20081013/fe354e5d/attachment.html>
-------------- next part --------------
An embedded message was scrubbed...
From: rcmaster199 at aol.com
Subject: Re: [NSRCA-discussion] Slide Ruler,,,,was Art Wagner
Date: Mon, 13 Oct 2008 19:31:36 +0000
Size: 680
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20081013/fe354e5d/attachment.mht>