Hi all,
 
At the page of Yvon Massé I found a link to a site by Gérard Baillet.
The site is in French but interesting to gnomonists.
2 small programs may be downloaded.
One program shows a horizontal sundial with moving shadow of the polestyle or the shadow of a vertical pin-gnomon.
 
Have fun with it.
 
Fer.
 
 
Fer J. de Vries
[EMAIL PROTECTED]
http://www.iae.nl/users/ferdv/
Eindhoven, Netherlands
lat.  51:30 N      long.  5:30 E

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