As long as {HEAD ~ curve C} stays within the range of linearity, {TAIL ~ fine displacing element} 112 provides all adjustment in the Y direction  
As long as { HEAD ~ curve C } stays within the range of linearity , { TAIL ~ fine displacing element } 112 provides all adjustment in the Y direction
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH