Made by the master when he was twelve, the robot was on display in 1495 at the Duke of Milan's celebration. The robot knight could stand, sit, raise its visor and independently maneuver its arms. The entire robotic system was operated by a series of pulleys and cables. Since the discovery of the sketchbook, the robot has been built faithfully based on Leonardo's design; this proved it was fully functional, as Leonardo had planned. The robot has the look of a knight. The armor is made from a German - Italian medieval style.The robot wasn't made just for show. It acted like an actual human being in a body of armor. It had different motions. These motions included sitting up, moving its arms, neck, and an anatomically correct jaw. Also it was most likely planned to be made with fluidity in combat. It is partially the fruit of Leonardo's anatomical research in the Canon of Proportions as described in the Vitruvian Man
Google (n.d.). The Ingenuity behind Leonardo Da Vinci Inventions .Leonardo Da Vinci's Life. Retrieved January 2012, from http://www.davincilife.com/ingenuity-behind-inventions.html