A soap film type gas flowmeter has {HEAD ~ an inverted U shaped gas flow tube} adjustably mounted in {TAIL ~ a sensor assembly} 
adjustably mounted in
A soap film type gas flowmeter has { HEAD ~ an inverted U shaped gas flow tube } adjustably mounted in { TAIL ~ a sensor assembly }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL