The name given to small clocks which are traditionally associated with the 18th-century sedan chair, though there is no direct evidence that they were used exclusively for this type of conveyance, if at all. They have dials 3 to 4 in. In diameter, mounted in a circular wooden frame turned with mouldings on the front and polished; a pendant bow is fitted at the top for hanging. Their movements are normally those of 30-hour pocket watches, and it is possible that they are derived from the large coach or travelling watches of the late 17th century.