A scanner 3, wherein {HEAD ~ said fixing member} comprises {TAIL ~ a boss} having a screw hole 
comprises
A scanner 3 , wherein { HEAD ~ said fixing member } comprises { TAIL ~ a boss } having a screw hole
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH