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