13th-century manuscript of celebrated engineer Al-Jazari’s Elephant Clock that appears in his book 'The Book of Knowledge of Ingenious Mechanical Devices'.
As well as telling the time, this grand beautiful 13th-century water-powered clock was a symbol of status, grandeur, and wealth incorporating the first mechanical figures writing time on a disc with moving, time-telling figures.
Title: Manuscript of Al-Jazari’s Water-powered Elephant Clock
Type: Water-powered clock
Original Source: Al-Jazari's Book The Book of Knowledge of Ingenious Mechanical Devices'.