Some instruments are offering virtual display+control panels on their web UI. My RTB2004 does this (extremely well, and without any plugins etc needed), and apparently the DMM6500 does a similar thing (haven't tried it yet, my unit is delayed in transit
![Angry >:(](https://www.eevblog.com/forum/Smileys/default/angry.gif)
). I believe that the older KS multimeters did too, but with some java thing that doesn't work these days?
Seems more convenient to use the PC they are already presenting from than try and find a VGA adaptor or a HDMI cable, just load up a browser window (though the instrument needs to be on the network).
Edit: DMM6500 arrived, web UI is pretty laggy compared to the RTB2004 (a few Hz update rate, vs the 10s of Hz that the scope can do), but would still be perfectly usable for a demo. (Also will be useful for the calibration I need to do on my SMU - can have the web-GUI meter display window right next to the GPIB comms tool I'm using to enter the cal commands).