Book of Ingenious Devices

High Quality Content by WIKIPEDIA articles! The Book of Ingenious Devices (Arabic: كتاب الحيل Kitab al-Hiyal) was a large illustrated work on mechanical devices, including automata, published in 850 by the three Persian brothers known as the Banu Musa (Ahmad, Muhammad and Hasan bin Musa ibn Shakir) working at the House of Wisdom (Bayt al-Hikma) in Baghdad, Iraq, under the Abbasid Caliphate. The book described about one hundred devices and how to use them.