Other conductors which may be grounded to a common ground cable may be utilized as a conductor for interconnecting {HEAD ~ a voltmeter} with the pipe and with {TAIL ~ the soil} in the place a measurement is intended to be carried out 
Other conductors which may be grounded to a common ground cable may be utilized as a conductor for interconnecting { HEAD ~ a voltmeter } with the pipe and with { TAIL ~ the soil } in the place a measurement is intended to be carried out
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH