Further definition of {HEAD ~ the produced line} of {TAIL ~ light}, or scan line, is provided by non parallel sides which extend between the reflective surfaces 
of
Further definition of { HEAD ~ the produced line } of { TAIL ~ light } , or scan line , is provided by non parallel sides which extend between the reflective surfaces
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH