{HEAD ~ The other end} of the pin carries {TAIL ~ a permanent magnet} in axially alignment with the sensor  
carries
{ HEAD ~ The other end } of the pin carries { TAIL ~ a permanent magnet } in axially alignment with the sensor
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH