Does anyone know if it is possible to have a single scale widget with two "sliders" from the tkinter
module? Or anyway to fake it?
Such as (edited with GIMP):
I am thinking placing one scale on top of another scale, but with a transparent background?
No, you cannot do this with the scale widget. You can't give it a transparent background and stack them.
If I had to implement this functionality, I would use a canvas widget and draw my own sliders. It's not very hard to do, but obviously it's going to be more work than an off-the-shelf widget.