{HEAD ~ A mounting assembly} for {TAIL ~ twin microscope housings} to permit synchronized tilting of the microscopes including a central spindle whose outside surface is threaded to accommodate an annular collar whose inside surface has corresponding threads 
{ HEAD ~ A mounting assembly } for { TAIL ~ twin microscope housings } to permit synchronized tilting of the microscopes including a central spindle whose outside surface is threaded to accommodate an annular collar whose inside surface has corresponding threads
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