Phase meter
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6-8-180
Alternative term: Phase-angle meter
An instrument that measures the difference of phase between two alternating electric quantities of the same frequency.
Note: The term power-factor meter refers to a phase meter for which the quantities are the voltage and current at a point of a circuit and in which the indication is of power factor.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)