Movement of {TAIL ~ the first wall} relative to {HEAD ~ the second wall} due to varying combustion chamber pressure transmits a load to the sensor 
Movement of { TAIL ~ the first wall } relative to { HEAD ~ the second wall } due to varying combustion chamber pressure transmits a load to the sensor
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH