The surface of {TAIL ~ the casing} on which the fitting means 24 is exposed is not limited to the outer surface of {HEAD ~ the casing} 
The surface of { TAIL ~ the casing } on which the fitting means 24 is exposed is not limited to the outer surface of { HEAD ~ the casing }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD