Balance crane

We built this wooden balance crane to allow school pupils to experience the operation of a lever during the Atelier Levers. 

Such a crane is a hoist that consists of a vertical pole that is fixed and forms the support point for the horizontal beam that serves as a lever. Sometimes the lever hangs from a chain, allowing it to be turned and swiveled. 

The load is connected to the lever by means of a rope, chain or something similar. Balance cranes were to be found in ports to load and unload ships, on construction sites, in quarries...