Magnetiser

From Tardis Wiki, the free Doctor Who reference

The Magnetiser was a large magnet-shaped device that the Daleks used to lift the Dalek Emperor from a watercourse that the Emperor had fallen into following an attack on the Daleks' city by the Monstrons. It took the power from four Daleks to provide enough power to lift the Emperor. (COMIC: The Menace of the Monstrons)