A device to detect the location of a plurality of magnets uses a plurality of magnetic sensors, having {HEAD ~ sensor elements} arranged in {TAIL ~ a known fashion} 
arranged in
A device to detect the location of a plurality of magnets uses a plurality of magnetic sensors , having { HEAD ~ sensor elements } arranged in { TAIL ~ a known fashion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL