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