Italic sundial with residual hours.
Italic sundial with residual hours and meridian line. The shadow of the golden sphere placed on top of the gnomon shows the hours of light that are missing from the sunset. The passage of the shadow of the sphere on the meridian line painted in red marks the instant of the passage of the sun on the meridian of the place. The quadrant diagram also shows the days of the solstices and equinoxes.