In the 13th century, Al-Jazari, an engineer from Mesopotamia (lived 1136–1206) who worked for Artuqid king of Diyar-Bakr, Nasir al-Din, made numerous clocks Saudi Arabia by Destination Magazine - KSA - issuu.
The general and the elephant clock of al jazari. 2017 July Beacon by KAUST - issuu.
Al-Jazari's work described fountains and musical automata, in which the flow of water alternated from one large tank to another at hourly or half-hourly intervals.
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