elektrilise mõõtevahendi viida (osuti) tasakaaluasend näidikul, kui mõõtevahendi kasutamisel (mõõtevahendiga mõõtmisel) mõõtesuuruse väärtus on null, equilibrium position towards which the indicating device of a measuring instrument which needs an auxiliary supply tends, when the instrument is in service and the value of the measurand is zero, equilibrium position which the index will approach when the measured electrical quantity is either zero or a set value and the control circuit (if any), producing a restoring torque, is energized