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Sinking bowl water clock

Glass Bowl Replicating an Egyptian Water Clock, 1940-1965

1940-1965

Replica of Saxon 'Sinking Bowl' Water Clock, 1931

1931; 750-850 CE

Water Clock

1840-1920
Plaster cast of early Egyptian water clock or 'clepsydra' from original dating from between 1415-1380 BCE, reign of Amenhotep III, found at Karnak Temple in 1904.

Egyptian Water Clock

1922
Model, scale 1:48, of a water powered Astronomical Clock-Tower, Science Museum, South Kensington, London, England, 1965. The original was built on the initiative of Su Song in 1088 and described in print in 1172.

Model of a Chinese Astronomical Clock-Tower, 1965

1965
Working model of a drum water-clock, with canopy and separate metal part, unsigned, 1955-1965

Working model of a drum water-clock, 1955-1965

1955-1965
Falling-drum water clock "worn and portions missing", c1700

Drum type water clock, about 1700.

1690-1710