{TAIL ~ The spring force} is coupled to {HEAD ~ the test member} via a movable member which moves in a substantially frictionless manner 
{ TAIL ~ The spring force } is coupled to { HEAD ~ the test member } via a movable member which moves in a substantially frictionless manner
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH