PRM booklet perhaps not included from september 2013
This model represents among Leonardo da Vinci's numerous interesting designs. It has been called Leonardo's vehicle" but present studies ponder over it one of the most significant main robots ever offered. These devices is drawn on folio 812/r/ linked to the Codex Atlanticus and also other services and products. The robot's motor is hidden internally: a spring held fast by a stopping procedure trasmits movement towards gears that move the tires in edges."