Crane (machine)

A crane is a lifting machine that has hoists, wire ropes and sheaves on it.  It can be used both to raise and lower things or to move them left and right. Cranes are often used in the construction industry (building houses or buildings) and in creating or moving heavy things. 

 Other websites 
Knots, hitches and bends 
VRML Simulation of an Excavator, Tower Crane, and Dumptruck 

Category:Machines