[retailer]

I was having a think about the auto return setup where motion is transmitted only by the viscosity of the oil, it now makes sense - a direct mechanical or even spring transmitted motion would probably put excessive strain on the tonearm needle mounting system within the cartridge, it is the needle riding in the record groove that moves the tone arm to actuate the auto return. The needle mounting system must be very compliant in order to track the audio signal in the groove so it makes sense to reduce to a minimum any stress on the mounting system.