{HEAD ~ The fluid assembly} discharges {TAIL ~ the fluid} to fill the cavity from a first position to a second position, the second position having an amount of a final volume such that a difference between the known initial volume amount and the final volume amount of the second position equals the volume of the body 
discharges
{ HEAD ~ The fluid assembly } discharges { TAIL ~ the fluid } to fill the cavity from a first position to a second position , the second position having an amount of a final volume such that a difference between the known initial volume amount and the final volume amount of the second position equals the volume of the body
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH