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