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Al-Jazari: The Elephant Clock (mechanical clock, which moves every half an hour)
from al-Jazari's Kitab fi macrifat al-hiyal al-handasiyya (The Book of Knowledge of Ingenious Mechanical Devices, a.k.a. Automata)
folio from an illustrated manuscript, 1315, probably Syria
Copyist: Farkh ibn cAbd al-Latif
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