For those having difficulty accessing the URL a better one for this would be:


http://www.freepatentsonline.com/2637108.pdf


Regards


Patrick





-----Original Message-----
From: Peter Mayer <peter.ma...@adelaide.edu.au>
To: 'sundial list' <sund...@rrz.uni-koeln.de>
Sent: Tue, Mar 2, 2010 2:05 pm
Subject: Would this dial work?


Hi,A while ago I came across US Patent 2637108 for a sundial watch 
byViesturs(http://www.freepatentsonline.com/2637108). The patent 
charminglysuggests that it may be used 'for play and sport, where a good 
mechanical watchis endangered by pressure, sand and water, and therefore not 
always adapted tobe carried around.  As play and sport are mostly exercised 
during sunny weather,a portable sundial can well replace a mechanical watch on 
these occasions".As may be seen from the copy of the illustration  which I've 
attached, itappears to be an equal-angle dial.  It has a compass (label b)to 
allow N-Salignment of the dial.  The shadow is cast by two vertical threads 
(label f).   After some pondering, I have concluded that the sundial may be a 
form ofmagnetic azimuth dial, but this could well be wrong.    My question is: 
would this dial work?best wishes,Peter --------------------------Peter 
MayerPolitics DepartmentThe University of Adelaide, AUSTRALIA 5005Ph    : +61 8 
8303 5606Fax   : +61 8 8303 3443e-mail: peter.ma...@adelaide.edu.aucricos 
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