RCA VideoDisc's Legacy: Scanning Capacitance Microscope

I had a friend who had one of those capacitive video disc players when I was a kid. Those got front of mind for me a few years ago when I noticed that a local fleas market had a lot of the discs but no players. I found out you could probably get a deadstock player on EBay but the belts would need replacing and when the stylus needed replacing… well they don’t make them anymore.