I found a very interesting website which includes some
information on the evolution of
gnomon orientation and
also many excellent
illustrations of sundial history - scroll down
the page.
I like the portrait of compass maker Hans Tucher - looks like Tony Moss before he shaved off his
beard.
A Historian Looks at Astronomy in the Classroom:
The page is
by Prof. Dr. Gudrun Wolfschmidt of the Universität Hamburg http://www.math.uni-hamburg.de/home/wolfschmidt/index.html
Bob
