The device may use {TAIL ~ an iterative process} to determine the actual location and {HEAD ~ orientation} of each magnet 
The device may use { TAIL ~ an iterative process } to determine the actual location and { HEAD ~ orientation } of each magnet
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH