NATIONAL GEOGRAPHIC - Da Vinci's DIY Science & Engineering Construction Kit - Build Three Functioning Wooden Models: Catapult, Bombard & Ballista /

Discover Da Vinci’s Workshop with three of NATIONAL GEOGRAPHIC’s best-selling da Vinci’s Invention Products. This kit includes 3 DIY building projects: Bombard, Catapult and Ballista. No special tools are required for you to build these three incredible inventions from Leonardo da Vinci. Everything is included in this kit: Laser-Cut Wooden Components, Rubber Bands, Sandpaper and clear, simple Instructions.

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About the NATIONAL GEOGRAPHIC society
With a mission to inspire people to care about the Planet, the 126-year-old NATIONAL GEOGRAPHIC Society is one of the world’s largest nonprofit scientific and educational organizations. National Geographic’s net proceeds support vital exploration, conservation, research, and education programs.