Alain, the solution to your problem is described in "Gnomonique Moderne" by Denis Savoie, published by la societe astronomique de france. An excellent treatise on all kinds of sundials, although you need to be well versed in french (which in your case I suppose will not be a problem). The solution I am afraid is somewhat mathematically involved... As for the drawing, no doubt any cad program fed with the formulas will spit out the answer.
Alain MORY wrote: > 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
