providing a signal representative of a reference rate of {HEAD ~ change} of {TAIL ~ the utensil content weight} 
of
providing a signal representative of a reference rate of { HEAD ~ change } of { TAIL ~ the utensil content weight }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL