{HEAD ~ an arm} carrying said dip ring at a first point and mounted for {TAIL ~ movement} about a first axis passing through said arm at a second point 
mounted for
{ HEAD ~ an arm } carrying said dip ring at a first point and mounted for { TAIL ~ movement } about a first axis passing through said arm at a second point
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH