The wire compression roller 32 is positioned so that it lies on {HEAD ~ the side} of the welding wire 1 opposite {TAIL ~ the wire driving roller} 30 and so that the exterior radial surface of the wire compression roller 32 is in contact with the welding wire 1 
opposite
The wire compression roller 32 is positioned so that it lies on { HEAD ~ the side } of the welding wire 1 opposite { TAIL ~ the wire driving roller } 30 and so that the exterior radial surface of the wire compression roller 32 is in contact with the welding wire 1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH