To all have interest for italics quadrants: I have built a horizontal italic quadrant, with the lines of the hours so that the 24th hour coincide with the twilight of- 11° (in agreement with the line of the twilight of the astrolabes).
The construction is performed exclusively with graphic methods, using the more ancient known method, that of the Analemma of Ptolemy (or of Vitruvius). The method is rather long, but I retain that it 'll give satisfactory results, for any latitude (and for any hour system). Whoever wants to know more, is begged to communicate his address, I will send to him the file in AutoCAD. Alessandro Gunella- 13900 Biella, via De Amicis 10. Italy [EMAIL PROTECTED]
