Noun meter reading has 2 senses

• meter reading(n = noun.cognition) indication, reading - a datum about some physical state that is presented to a user by a meter or similar instrument; "he could not believe the meter reading"; "the barometer gave clear indications of an approaching storm"
is a kind of data point, datum
has particulars: clock time, time, miles per hour, mph

• meter reading(n = noun.act) reading - the act of measuring with meters or similar instruments; "he has a job meter reading for the gas company"
is a kind of measure, measurement, measuring, mensuration