| 31. | Well-heeled mothers and their Filipino au pairs play with children near the famous water clock there.
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| 32. | Some modern timepieces are called " water clocks " but work differently from the ancient ones.
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| 33. | The bronze heads were part of a water clock featuring the 12 animals of the Chinese zodiac.
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| 34. | Some water clock designs were developed independently and some knowledge was transferred through the spread of trade.
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| 35. | The Zeebad Gonabad water clock was in use until 1965 when it was substituted by modern clocks.
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| 36. | At the centre of the pedestrian mall is a large water clock sculpture, designed by Victor Cusack.
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| 37. | The Zeebad Gonabad water clock was in used until 1965 when it was substituted by modern clocks.
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| 38. | The explanation of a " clepsydra " or water clock was a popular topic in the Middle Ages.
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| 39. | The frequency source for the first nonsolar timepieces, water clocks, was a steady drip into a catch basin.
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| 40. | Water clocks or clepsydra measure a gain or loss of water by using drops of uniform size and frequency.
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