In this case the flowmeter 6 will register a flow which is nil or close to zero, {HEAD ~ such a measurement} indicating {TAIL ~ the presence} of the casing over an area with a bonding defect 
In this case the flowmeter 6 will register a flow which is nil or close to zero , { HEAD ~ such a measurement } indicating { TAIL ~ the presence } of the casing over an area with a bonding defect
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH