Title: The book of secrets in the results of ideas
Description: The manuscript was copied in 1266 from the original text written by Ibn Khalaf al-Murādī in the eleventh century. The only copy is in the Biblioteca Medicea Laurenziana in Florence, Italy. A unique source of medieval Arabic technology, it presents designs for more than 30 devices, including water clocks, calendars, and war machines.
Subjects: Early works to 1800, Mechanical engineering, Mechanical movements