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