The scorpio or scorpion was a type of Roman torsion siege engine and field artillery piece. It was described in detail by the early-imperial Roman architect and engineer Vitruvius in the 1st century B
A modern reconstruction of the scorpio.
Modern reconstruction of a Scorpio
Scorpio in fortified position
The gastraphetes, also called belly bow or belly shooter, was a hand-held crossbow used by the Ancient Greeks. It was described in the 1st century by the Greek author Heron of Alexandria in his work B
A modern reconstruction of the Greek gastraphetes
Crossbowman cocking the gastraphetes
The design of the gastraphetes according to Heron of Alexandria
A reconstruction of a gastraphetes in Kotsanas Museum of Ancient Greek Technology, Athens, Greece.