The lateral position of {HEAD ~ the carriage}, accordingly, provides a visual indication of the tension in {TAIL ~ the test member} 
The lateral position of { HEAD ~ the carriage } , accordingly , provides a visual indication of the tension in { TAIL ~ the test member }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL