Extending upwardly of the base plate 51 is a pair of {TAIL ~ telescope} supporting members 54 between which {HEAD ~ a telescope} 55 is pivotally mounted by a pivot shaft 56 
Extending upwardly of the base plate 51 is a pair of { TAIL ~ telescope } supporting members 54 between which { HEAD ~ a telescope } 55 is pivotally mounted by a pivot shaft 56
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH