Turning to the drawings, FIG 1 illustrates {HEAD ~ a switch heating assembly} 2 for use in {TAIL ~ heating rails} 10 mounted on ties 12 
Turning to the drawings , FIG 1 illustrates { HEAD ~ a switch heating assembly } 2 for use in { TAIL ~ heating rails } 10 mounted on ties 12
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH