how italian hours

2010-03-29 Thread Frank Evans
Greetings, fellow dialists, Following the pictures of the fine dial of Frank King in Selwyn College, Cambridge (congratulations) I began to wonder how it was laid out. Most of the commonly consulted books on dial construction (in English), Waugh, Mayall Mayall, Cousins, etc. do no more than

Re: how italian hours

2010-03-29 Thread Fabio Savian
dear Frank, I use the trigonometric sphere. I get the formula for the angle (alpha) between the max slope line and the n italian line, then the distance (s) of the italian line from the base of the orthostyle O. The formula is for any oriented dial. I attach: - the trigonometric sphere: P is

RE: how italian hours

2010-03-29 Thread Jack Aubert
I have been thinking the same thing. That slate dial is strikingly beautiful and I like the idea of using a completely different type of hour that does have to offer any excuses for not being the same as what is on one's watch. Frank King's narrative write up answered one of my questions. I had