Multimeter

Measuring AC and DC Voltage
Model 87 features true rms readings, which are accurate
for distorted sine waves and other waveforms (with no dc
offset) such as square waves, triangle waves, and
staircase waves.
The Meter's voltage ranges are 600.0 mV, 6.000 V, 60.00
V, 600.0 V, and 1000 V. To select the 600.0 mV dc range,
turn the rotary switch to mV.

Fluke Multimeter 87V