This is a case for the battery charge % gauge (golf cart, solar batteries, etc.) found under several brand names on Amazon.  I wanted a case for it so it does not have to be panel mounted.  See pics for dimensions and other information.

Prints nicely in TPU with no supports required.  Designed specifically for TPU and so some sizing issues (too tight) may occur if you try to print it in a non-flexible filament.

Enjoy!