Re: Earliest Sundials

2005-01-02 Thread Gianni Ferrari
Among the sundials of the ancient Islam - made before 1500 - the only one with a polar style is that, already mentioned by Fer de Vries, drawn by Ibn al Shatir in 1372 and placed at the base of the minaret of the great Umayade mosque in Damascus. The existing sundial, with a beautiful

Gnomon location holes

2005-01-02 Thread JOHN DAVIS
A couple of months ago, Mike Cowham asked the SML for an explanation of the two small dots or holes seen on the dialplates of antique horizontal dials, just where the tip of the gnomon meets the dialplate. Several suggestions were made, such as their use as alignment marks to position the gnomon.

Gecko Dial Installed!

2005-01-02 Thread John Carmichael
Hello All: After nearly two years of work, my large stained glass sundial (The Gecko Dial) is finally installed in the bay window thatwe made especially for it at my home in Tucson. It is only the 2ond permanently installed stained glass sundial in the United States. (The other one is in a