This 3d model is low poly and game-ready. Real-world scale (millimetres).You can buy this model as part of the collection https://www.cgtrader.com/3d-models/various/various-models/medieval-collectionBuying this collection will allow you to save an additional 119 USD (the total cost of separate models is 618 USD)

The ballista, plural ballistae, sometimes called bolt thrower, was an ancient missile weapon that launched a large projectile at a distant target. Possibly the earliest mention of ballistae occurs in a description of weapons made by King Uzziah, who reigned over the Kingdom of Judah in the eighth century BC: And he made in Jerusalem engines, invented by cunning men, to be on the towers and upon the bulwarks, to shoot arrows and great stones withal. And his name spread far abroad; for he was marvellously helped, till he was strong. Developed from earlier Greek weapons, it relied upon different mechanics, using two levers with torsion springs instead of a tension prod (the bow part of a modern crossbow), offering much greater efficiency over tension based weaponry. The springs consisting of several loops of twisted skeins. Early versions projected heavy darts or spherical stone projectiles of various sizes for siege warfare. It developed into a smaller precision weapon, the scorpio, and possibly the polybolos.

Formats: .MAX (3ds Max 2016 + V-Ray) .FBX .OBJ

Textures (4096x4096 .PNG ): diffuse albedo (base color) specular metalness roughness glossiness normal (DirectX, OpenGL) ambient occlusion (AO)

Rendered in Marmoset Toolbag 3.