In a preferred embodiment of the invention, {HEAD ~ the technique} is employed to assemble {TAIL ~ a scan optics module} and a scanner body in a laser scanner 
In a preferred embodiment of the invention , { HEAD ~ the technique } is employed to assemble { TAIL ~ a scan optics module } and a scanner body in a laser scanner
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH