A crane is a mechanical lifting device that is used to move heavy objects vertically and horizontally. Cranes consist of various components, including a boom, which is the long, telescopic arm that extends and retracts, and a hook or lifting mechanism attached to the end of the boom. The crane is typically mounted on a mobile platform, such as a truck or a crawler, which allows it to be easily transported to different locations.

Cranes are widely used in construction sites, manufacturing facilities, ports, and other industries where heavy lifting is required. They are capable of lifting and maneuvering objects of considerable weight, ranging from construction materials to shipping containers. The operator controls the crane from a cabin or control room, using a combination of levers, buttons, and joysticks to manipulate the movement of the boom, rotation of the crane, and lifting and lowering of loads.