Catapult

The Catapult is a ballistic weapon designed by Leonardo da Vinci. A sketch of a large seige device existed in his Notebook while he also had a smaller handheld version in his possession.

History
Whilst observing Professor Pico through his Magnascope, Leonardo saw a drawing of his catapult design amongst his notes. (Da Vinci's Code)

Leo used a small handheld catapult to fire some pollen from a wild flower, used for ochre paint, to disorientate Alberto and his thugs and rescue Lucia Rossi and her Nonna. (The Fugitive)