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