René R. J. Rohr, in his "Sundials - History, Theory, and Practice", page 55 says about how to place the style in a declining dial: "The principle is simple. The style lies in the plane of the meridian and its axis makes with the vertical of noon an angle equal to the complement of the latitude".
In the four decliners I built ballpark measures (I didn't have the instruments to take a proper measure) indicate he is right about the plane of the meridian. As to the the angle its axis makes with the vertical, it does not match what I've found. Am I wrong again? - fernando -- Fernando Cabral Padrao iX Sistemas Abertos mailto:[EMAIL PROTECTED] http://www.pix.com.br mailto:[EMAIL PROTECTED] Fone: +55 61 321-2433 Fax: +55 61 225-3082 15º 45' 04.9" S 47º 49' 58.6" W 19º 37' 57.0" S 45º 17' 13.6" W
