Old photos of clocks and watches. From the past to nowadays.

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Mechanical Clock – Yi Xing, a Buddhist monk, made the first model of a mechanical clock in 725 AD.  This clock operated by dripping water that powered a wheel which made one full revolution in 24 hours.  An iron and bronze system of wheels and gears made the clock turn.  This system caused the chiming of a bell on the hour.  Su Sung’s great ‘Cosmic Engine’ of 1092 was 35 feet high.