The direction of the earth's magnetic field is sensed by a floating ring core in a fluxgate coil and transformed to a digital signal read by the autopilot steering computer.
Condition: In Stock and Ready to Ship! This unit is in excellent physical condition and was removed from a boat that received a total electronics refit. See Photos. Guaranteed in good working order and covered by a 14 day return policy. This listing is only for what is shown in the photos. No other parts or pieces are included.