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