Low magnetic crane is designed to reduce the magnetic interferences to the minimum level. Every main component is manufactured in a-magnetic material, magnetic. To reduce the magnetic permeability, all the components, for which it is not possible to use a-magnetic material, is treated by degaussing process in order to reduce residual magnetism. In addition for measuring magnetism level special magnetism measuring devices shall be used. The materials for the crane components manufacturing will be chosen among stainless steel and aluminium.