Re: Armillary Dial

[SchaldachK]

In einer eMail vom 13.07.2005 19:22:16 Westeuropäische Sommerzeit schreibt [EMAIL PROTECTED]: After Roman dials with their vertical obelisk type gnomons, when did sundials with gnomons in parallel to the planet's axis first appear? I found an entry in the BSS Glossary  2000 for the introduction of an armillary dial in 1598 by Valentin Pini. Would he have been the first one to have installed a 'modern' dial? Is there a history of the development of the dial ?   Best wishes Heiner Thiessen 51N    1W Dear Heiner, it is amazing but the oldest Greek dial of about 340 B.C. is an equatorial with horizontal gnomons. But we know also of Roman dials with gnomons parallel to the planets's axis an idea which was born probably in the Hellenistic period. Sunny wishes Karlheinz Schaldach