Made by Ninon Vallin, one of the few English clockmakers of the Elizabethan period, and signed on the top plate. The single hour hand of this clock rotates once every 24 hours. It shows the time of day, the date, the position of the sun and moon in the zodiac, the phases of the moon, the moon's age in days and the difference between solar and lunar time. The time of high tide at London Bridge can also be read.
© Science Museum / Science & Society Picture Library