Medieval Ballista Siege Engine Illustration - Historical Warfare Diagram #47719 (License: Personal Use)

This black-and-white technical illustration depicts a mobile ballista, a torsion-based artillery weapon from antiquity and the Middle Ages. The design features a sturdy wooden chassis mounted on four spoked wheels, dual sinew- or rope-wound torsion arms, a sliding stock with a grooved track, and a winch mechanism for drawing back the bowstring. The image emphasizes structural clarity over realism, making it ideal for educational diagrams or historical reconstructions.

Used on educational websites, museum exhibits, history textbooks, and wargaming/re-enactment resources to explain ancient siege technology; targets users researching military engineering, classical warfare, or medieval weaponry.