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