 Set in the correct position, it registered the hours of sunrise, the length of the day, the solstices and equinoxes and the passage of the sun through the constellations.There is only one other known example of this kind of sundial, which was found in Greece in 1939.There is also a model of the cylindrical Shepherd's Clock, sitting on a low wall in the main square, beside the historic church of S. Michele Arcangelo.