Re: Inferior polar dial

[Chris Lusby Taylor]

Pardon my ignorance David, but what's an "inferior" polar dial, please?   Surely the latitude is irrelevant, as a polar dial is merely inclined.   If I'[m right in thinking the dial is shaped like an inverted letter "T", it seems to me that the shadow of the gnomon will fall on the dial for 3hours 40 minutes either side of noon, so I suppose the answer to your question is that it should show 8:30am to 3:30pm in GMT, and 9:30 to 4:30 BST, assuming it's for the UK.   Regards Chris Lusby Taylor 51.4N 1.3W   ----- Original Message ----- From: [EMAIL PROTECTED] To: sundial@rrz.uni-koeln.de Sent: Sunday, January 25, 2004 7:40 PM Subject: Inferior polar dial I think I know the answer to this one, and I'll say more in due course, but just to see what all you gurus say.......... What hour lines should be inscribed, and in what places, on an inferior polar dial for latitude 52N? The centrally-placed gnomon is 13 units high, the overall plate width (east-west) is 37 units and the north-south plate height is 26 units. David Brown Somerton, Somerset, UK