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