{TAIL ~ The armature} 23 and pole piece 24 are preferably fabricated from {HEAD ~ a magnetic material}, such as soft iron 
{ TAIL ~ The armature } 23 and pole piece 24 are preferably fabricated from { HEAD ~ a magnetic material } , such as soft iron
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH