Crane operator is so far removed from the ground and the load, he cannot see any obstacles that may be in the way. The spotter helps spot for the operator by keeping a watch for any problems and radioing instructions to the crane operator. With constant radio contact, a crane can transport heavy equipment with ease.
The Cameras can be attached to the Helmet of the Spotter, Worker etc. and display to the Crane operator Cabin. The Operator can see clearly through the cameras instead of relying on the two way radio Communication between Worker or Spotters which are very difficult. This system is very useful when accurate movement of material is required.