Leonardo da Vinci improved upon the already-established design when he introduced his own version to the age-old military launching device. The plans for the new employed a hand-crank that caused tension on the throw arm before releasing a projectile. His unique spring design produced a large amount of energy in order to propel stone projectiles or incendiary materials over great distances.
No batteries required.
Unit Dimensions (L x W x H - Inches):
11 x 9 x 3.25
Unit Weight (lbs):
WARNING CHOKING HAZARD- Small parts. Not for Children under 3 yrs
100% Satisfaction Guarantee: At Mansion Schools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Schools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.