A crane is a lifting machine that primarily works with the use of pulleys and cables. For construction and manufacturing industries, cranes are valuable assets because they make working with heavy machinery and construction materials easy.

The invention of cranes made things easy for people because without them, loading, unloading, and lifting had to be done by human hands, would consume more time, and the entire system was not efficient at all.

The ones that we might have seen at shipyard, on the road may seem like a fairly modern invention, but these machines have actually been used for at least the past 2,000 years. The Romans used them to build huge monuments, and Medieval churches were constructed with them. The Chinese used them to build castle towns. The Egyptians may have used them to create the pyramids. The modern version can be either simple or complex, and they vary based on their application.