The moveable portion of the armature is substantially centered within the passage in {TAIL ~ response} to the fixed portion being engaged to {HEAD ~ the armature mounting structure} 
The moveable portion of the armature is substantially centered within the passage in { TAIL ~ response } to the fixed portion being engaged to { HEAD ~ the armature mounting structure }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD