@Gauss Interestingly I was just trying to think about a method to measure the skin thickness between the balls in scrotums/ballsacks since I wanted to think of a more ergonomic design for non-invasive (piercing) ball jewelry, that is just a beautiful ball-ring without too much added weight and just for the bling and to keep balls from retracting back up too far and "hide".
It would need to look similar to an Infinity-Symbol ∞ but not touch in the middle - just be narrow enough to prevent testicle torsion maybe even to a certain extent (not vertically of course since the spermatic cords can still get twisted).
But to have a more or less ergonomic ball-ring then, that's smooth and screwed together on one (with a skin-safe hinge on the other) or both sides, would be a really cool new non-invasive genital "bling", I haven't seen anywhere yet. Ball-weights aren't for everyone, but non-invasive ball-"bling" would be, methinks.
The lighter metal ball-weights I got feel really awesome and I can wear them through the whole day - even though I found on the bicycle I need to adjust my package when I sit down each time since otherwise some skin-folds are squeezed between the metal ring and the saddle.