I'm sure there is a simple way to do this. I'd like a vertical bar. That's it. A slider, type bar, but vertical.

I'm trying to get it both Vertical and type Bar - I think I can work out how to make my own contraption to do it though!

Ah, I see. In that case, yes; you'll need to build a contraption.

If you make something general-purpose, consider sharing it in the Contraption Bazaar!