In such an apparatus, {TAIL ~ the resistor/sensor} is held in {HEAD ~ an Al chassis box} to shield them from external electronic noise 
In such an apparatus , { TAIL ~ the resistor / sensor } is held in { HEAD ~ an Al chassis box } to shield them from external electronic noise
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH