A system for indicating the relative direction of a target object or location as determined from the current position of a wireless communication device. The method determines a thickness of the first pinned layer which will yield the desired net magnetic moment for the pinned layers. The second tube is located inside the first tube and a standoff is located between the inner wall of the first tube and the outer wall of the second tube. The first lever and the second lever reach from inside the housing of the nacelle through an opening to the outside of the nacelle, so that the drive is located outside of the housing of the nacelle, when the turning device is attached to the wind turbine.