The clock case is set on a rectangular gilt bronze plinth, decorated in relief with Classical male figures drinking and conversing, on four square feet. The case itself takes the form of a plinth and is decorated on each side with Egyptian-style reliefs showing male figures either side of a central column, surmounted with a beared head and with a snake coiled around it. The circular clock dial, positioned on the front of the case, is set with Roman numerals.
To the side of the clock case is a full length ormolu figure of Urania, the Ancient Greek muse of astronomy. She is depicted wearing a long, pleated gown and is shown holding the Caduceus, a staff entwined with snakes and surmounted by wings, in her left hand. In her right hand she is shown holding her traditional short staff, which she uses to point to the heavens, here represented by the black patinated bronze globe on top of the clock case. The globe is decorated with gilt bronze stars and signs of the zodiac, and is supported by four sphinx figures. Urania in Greek mythology is the daughter of Zeus and Mnemosyne, the goddess of Memory, and has the ability to foretell the future based on the stars.