ROMAN CATAPULT WOODEN KIT simple machines Thumb movement

Thumb movement

wearable device can be used perfectly by either right-handed or left-handed users

Battery Type: 'N' type not included

a wave or shake your hydraulic Cyborg hand to amaze your friends for some fun

The SOLAR HOUSE PROJECT - COMPONENTS   kit is designed to introduce students to the concept of solar power and how solar power can be used to run electrical appliances and fittings in a house

ROMAN CATAPULT WOODEN KIT simple machines Thumb movementThe Roman catapult improved on the medieval design by the addition of torsion springs. Originally invented by the Greeks over 2000 years ago and widely used by the Romans in battles and sieges, the Catapult had many different methods of firing. During the Roman Empire the catapult was refined and improved. This model represents a smaller version of a common catapult style of the time. Based on drawings and written records, this Pathfinders kit