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