Hello Alain, At what latitude and longitude the tower is? In this picture you see the pattern for an east facing vertical dial at latitude 52 degrees for local sun time, on a vertical cylinder. The diameter is 435 cm, the gnomon is 25 cm. What is about the dimension of the height and width of the dial? What must be shown on the dial? The software is present to draw all kind of lines for such a dial, however I didn't test the program in all details. It runs just like my zonwvlak program.
Best, Fer. Fer J. de Vries [EMAIL PROTECTED] http://www.iae.nl/users/ferdv/ Eindhoven, Netherlands lat. 51:30 N long. 5:30 E ----- Original Message ----- From: Alain MORY <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, April 26, 2000 10:02 PM Subject: sundial on a tower > Good morning sundiallists ! > > Here I am again, with my ugly problem ! I went last saturday to my > friend's new house. It has a 4,35 m diameter tower, facing to East ! > I really don't know how a sundial could look on such a wall ! > I didn't find any software able to draw these lines, that are curves. > I'm not a great friend with mathematics, so I thought that the trigon > laser is the only solution, isn'it ? > > Did anybody try to draw such a sundial ? > > Cheers > > > Alain MORY > > 48°N 7°E > Attachment converted: Macintosh HD:tower.gif (TIFF/JVWR) (00012CBC)
