Codex Atlanticus

…Biblioteca Ambrosiana in Milan, called Codex Atlanticus because it is the size of an atlas, was collected by the sculptor Pompeo Leoni at the end of the 16th century. Its companion volume, after a roundabout journey, fell into the possession of the English crown in the 17th century and was…

…concept, is found in the Codex Atlanticus, a compilation of some 1,000 pages from Leonardo da Vinci’s notebooks (c. 1478–1518). However, there is no evidence suggesting that da Vinci ever actually constructed such a device.