This polyhedral dial consists of an octagonal wooden box with a lid.Inside the block is a scaphe dial that was painted in blue, gold and silver and had a sun effigy in the centre, but the paint has faded. On seven of the external sides of the block are vertical pin gnomon dials for Italian hours, along with figures of angels and mottoes taken from the Bible.
Inside the hollowed base of the block is an incomplete manuscript calendar volvelle giving times of sunrise, midday and midnight and the position of the Sun in the Zodiac.
