FIG 5 illustrates {HEAD ~ the magnetic lines} of force on a device constructed according to principles of {TAIL ~ the invention} 
FIG 5 illustrates { HEAD ~ the magnetic lines } of force on a device constructed according to principles of { TAIL ~ the invention }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL