Length3 m
10Bread loaves
15Dinner forks
Photo from Wikimedia Commons
Roman Ballista
The torsion-powered siege engine of the Roman legions/Historical Weapons
The Roman ballista was a large crossbow-like siege engine powered by torsion springs made of sinew. It could hurl stone balls or heavy bolts with great accuracy over several hundred meters. Smaller versions called scorpiones were mounted on carts for field use.
Measurements
Width (arms extended)2.5 m
56.8Wine cork lengths
25Pine cone lengths
913 millionthsGolden Gate Bridges
Height1.8 m
6.7 thousandthsTitanic lengths
2.2 thousandthsBurj Khalifas
Mass450 kg
269 octillionProtons
1,125Cans of soup
450 millionGrains of sand
Projectile mass26 kg
8.7 tenthsGolden retrievers
400 millionSand grains
Effective range300 m
5,263Rubik's cubes
41Extension ladders
200Hockey sticks