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Revision as of 21:34, 25 February 2007 by Planish (talk | contribs) (changing definition to make distinction from "arbalest")
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A ballista is one type of siege engine which uses a crossbow-like arrangement to hurl a projectile, as opposed to a catapult which throws its projectile by employing a long arm structure.

The crossbow-like arrangement itself consists of a pair of opposed rigid arms, each with torque provided by their own torsion bundle or skein of twisted rope.

External Links:

Ballista Construction

"Baby Ballista" and "Ballista Jr." at

See also: Arbalest