Such a device is constructed in the form of {TAIL ~ a toggle mechanism} on which {HEAD ~ further fine control movements} can be imposed through a series of adjustment possibilities 
on
Such a device is constructed in the form of { TAIL ~ a toggle mechanism } on which { HEAD ~ further fine control movements } can be imposed through a series of adjustment possibilities
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH