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