In yet another embodiment, shown in FIG 8C, the display 106 provides a different indicator, such as an arrow 260, to provide {HEAD ~ a visual indication} of {TAIL ~ the location} α of the magnet 120 
of
In yet another embodiment , shown in FIG 8C , the display 106 provides a different indicator , such as an arrow 260 , to provide { HEAD ~ a visual indication } of { TAIL ~ the location } α of the magnet 120
OTH OTH OTH OTH OTH OTH OTH 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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH