This is a universal drag and drop dial control, you can create as many dials as you like, set the min and max range, get and set the control programmatically, and of course grab it and change it with the mouse. The example sprite should give you an idea of how to use it, it's pretty straight forward. Each of the dials needs to have a unique name or they'll get mixed up, the font only deals with lower case (rendered upper case) and a few symbols. This isn't tested to breaking point so feel free to report bugs. There's no protection to setting a dial outside of it's set range, so just don't, it's silly! I'll probably add colours to the dials at some point.
Font by me, dial design by me