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