- Build a tabletop ballista! Leonardo da Vinci invented this fascinating mechanical crossbow, The ultimate medieval artillery weapon, in the 15th century.
- Send projectiles up to 15 feet! Each model is fully functional; the kit comes with 1 arrow plus 6 paper targets.
- Everything you need to assemble each model in 1-3 hours: laser-cut wooden components, rubber bands, sandpaper and clear, simple instructions. No special tools necessary.
- Great for kids and adults, This kit is the perfect STEM school project or an office game.
- 100% satisfaction guaranteed. For 129 years, National Geographic has been a brand you can trust for scientific and educational excellence.
What's in the box
laser-cut wooden components, rubber bands, sandpaper