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