Lantern clocks were the primary domestic timekeepers of the 17th century, and were often made by Huguenot clockmakers who arrived in London from Flanders and France. It is a wall clock with square bottom and top plates surmounted by a large bell with four corner pillars, and a 30-hour movement with one or more weights. The origin of this clock’s name still remains a mystery, although it does resemble a lantern in it shape. Other sources refer to brass, the main metal of which lantern clocks are made. Copper alloys, of which brass is one, were often called latten in earlier times and 'lantern' could well be a corruption of this old word. The weights, which drive the clock mechanism, hang freely below the clock case.