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