AEMC 721 User Manual page 7

The Model 721 is comfortable to hold, compact and easy to maneuver in
crowded breaker panels. The hooked jaw design facilitates clamping and
accommodates two 500 MCM conductors.
The AEMC Harmonic Meter Model 721 works as easily as a clamp-on mul-
timeter, while permitting True RMS voltage and current measurements.
The rotary switch selects the volt or ampere range and, beneath the large
LCD, five push buttons provide direct access to additional key measure-
ment and power quality values.
The Model 721 high sensitivity accepts low input levels (300 mA and 300
mV) permitting power quality measurements on even low power or idling
equipment — an advantage not common to many instruments.
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Harmonic Meter Model 721