Pot(entiometer) Joint

This is a (mostly) universal single-axis rotational joint for a BxxK (e.g. B50K) potentiometer. When it came time to name the first file... there was no better name than "Pot Joint." And it has nothing to do with weed. Go figure. The joints are connected by smooth or threaded rods of whatever length is necessary.
The point of all this is to make scale model controllers for larger robot arms.
This has never actually been made, and I would love it if someone tested it out, especially if they tweaked it.