With this method {HEAD ~ no attempt} is made to make {TAIL ~ the size} of the return stroke independent of ambient influences instead, a change in the return stroke is compensated for by a suitable control voltage 
is made to make
With this method { HEAD ~ no attempt } is made to make { TAIL ~ the size } of the return stroke independent of ambient influences instead , a change in the return stroke is compensated for by a suitable control voltage
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL 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