{TAIL ~ This mass} is assigned a sensor element that can deflect radially with respect to {HEAD ~ the axis} but cannot oscillate about the z axis 
{ TAIL ~ This mass } is assigned a sensor element that can deflect radially with respect to { HEAD ~ the axis } but can not oscillate about the z axis
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH