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Picture No 10052562
Date circa 200 BC
Description Clock - Self-Adjusting Clepsydra
Details

The SELF-ADJUSTING CLEPSYDRA is attributed to Ctesibius, a mechanical engineer of Alexandria, Egypt : the technology involves a dual action of tube and reservoir
Source cigarette card by an unnamed artist in Morris's series 'Measurement of Time' (1924)
Credit Mary Evans Picture Library
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