· The is a precision instrument useful for measurement of AC voltages, covering the entire audio frequency range. · The instrument responds to the average value of · Signal and displays the RMS value. · The instrument is particularly suitable for testing of audio equipment and is also an essential test instrument for laboratories. · Ability: Line voltage variation upto 10% do not affected accuracy of reading. · Pre - Deflection: Less than 50uV in1mVrange with input shorted.