In addition, {TAIL ~ a sensor}, indicated generally at 52, is mounted on {HEAD ~ the second support} 
In addition , { TAIL ~ a sensor } , indicated generally at 52 , is mounted on { HEAD ~ the second support }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD