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