Thank you very much, I'll try it soon!
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I learned from a book (in teory) how to make an altitude ring sundial. 'Tis
different from the equatorial ring, as it is devised specially for one
certain latitude. My problem is that I can't manually lay out the
hour/declination lines (to be transfered to the inner face of the ring) with
the
-koeln.de
Sent: Wednesday, November 17, 2010 7:51 PM
Subject: How to calculate a perforated ring dial's diagram?
I learned from a book (in teory) how to make an altitude ring sundial. 'Tis
different from the equatorial ring, as it is devised specially for one certain
latitude. My problem
