{HEAD ~ The adjustable mounting} of the gas flow tube enables {TAIL ~ optimum operation} of the flowmeter for widely ranging gas flow rates 
enables
{ HEAD ~ The adjustable mounting } of the gas flow tube enables { TAIL ~ optimum operation } of the flowmeter for widely ranging gas flow rates
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH