Cranes are mechanized devices that are used to move or lift equipment from one place to another. Cranes usually have a hoist and chains or ropes to do the needful. Cranes are mechanized and can also be operated manually. Cranes are available in a variety of sizes. Cranes are generally used in the transport, logistics and construction industry to lift heavy items and move them as and when required. Cranes are also useful in the manufacturing industry during assembling of materials and heavy equipment. Cranes can also be mounted on trucks and used. Large floating cranes are also useful in the oil industry for making oil rigs.