Giant Crossbow
Leonardo came up with the idea for a giant crossbow, although the one that he thought of is very different than the ones today. His idea is much bigger in size than crossbows today. Leonardo's design is on wheels and would be pushed around. It also fires rocks instead of arrows. Leonardo's crossbow needs two men to pull back the bow to load it. Then they would pull the release with a string. It could of also been released by hammering it. The two ways the bow could have been released are shown to the left in the sketch. The crossbow was recreated by a team of engineers and worked.