Mounted on the shaft 30 is {TAIL ~ a viewing or telescopic apparatus V} having a base plate 50 welded or otherwise secured to {HEAD ~ the shaft} 30 
Mounted on the shaft 30 is { TAIL ~ a viewing or telescopic apparatus V } having a base plate 50 welded or otherwise secured to { HEAD ~ the shaft } 30
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH