Astronomical and navigational instruments

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Hour-glass/ Table Klepsydra

Astronomical and navigational instruments

Object connections:

Collection Astronomical and navigational instruments
User collections Collectables (All) by blueheatwave
Collections (Europe) by blueheatwave
Gallery locationROG (Floor plans)

Object details:

Object ID AST0070
Description A klepsydra is a kind of glass that measures time using the flow of water, rather than sand. In this 30-minute glass, water flows through four glass tubes with curved ends which pass through the cork seal between the ampoules. The inner tubes allow the water to flow down, while the outer tubes let air flow back into the upper bulb. The glass is in a wooden frame with five supports and foliate decoration painted in gold and vermillion. It has a dome which can be removed and attached to either end of the frame so that the glass can be turned upside-down and reset. The vane from the top of the dome is missing.
Date made circa 1670

Artist/Maker Unknown
Place made Italy
Credit National Maritime Museum, Greenwich, London, Caird Collection
Materials gilt paint, water; wood; glass
Measurements Overall: 690 x 280 x 280 mm
  • Hour-glass/ Table Klepsydra (AST0070)
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