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