Sound Field Plug-Ins : SignalTools : SignalTools Display Options : SignalTools Phase Meter Display

SignalTools Phase Meter Display
The Phase Meter indicates the phase coherency of two channels of a multi-channel signal.
 
The Phase Meter is green when the channels are positively out of phase (values from 0 to +1) and red when the channels are negatively out of phase (values from 0 to –1).
At the center or zero position, the signal is a perfect stereo image. At the +1 position, the signal is a perfect mono image. At the –1 position, the signal is 100% out of phase.
SurroundScope
With SurroundScope you can select the two channels to compare by clicking the channel buttons around the Surround Display. Selected channels are indicated in blue.
 
PhaseScope
With PhaseScope, the left and right channels are always compared.