{HEAD ~ This gauge} has {TAIL ~ a pair} of cylindrical sleeves 41 and 42 that are shown in ion 
{ HEAD ~ This gauge } has { TAIL ~ a pair } of cylindrical sleeves 41 and 42 that are shown in ion
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH