Thank you!! Yes!

"A vectorscope is a type of oscilloscope used in both audio and video applications. Whereas an oscilloscope or waveform monitor normally displays a plot of signal vs. time, a vectorscope displays an X-Y plot of two signals, which can reveal details about the relationship between these two signals."

One of my favorite things is to use these with sine waves split L and R. Then, you can tune the sinewaves to the true just intonation and watch the beautiful natural curves/ratios our universe gives us in the overtone series.