Edu-Toys Leonardo Da Vinci Swing Bridge

The scientific genius of Leonardo da Vinci is brought to life through this articulated model. The invention that inspired this snap-together replica is taken from the pages of Da Vinci's priceless and awe-inspiring notebooks. This model is made of plastic, snaps together and requires no special tools. The manual is very educational and teachs how this invention has evolved into what it is today. Leonardo da Vinci's Swing Bridge design is a portable, lightweight bridge that was intended to span across a body of water so armies could cross and then quickly disassemble and tow away. By means of an articulated system of winches and wheels, the bridge was designed to rotate 90 degrees. No batteries required. Also known as DV003