I made second level for my desk and wanted to mount my frequency counter to the board. The case has holes for wires and banana jacks. Wrap some electrical tape around the 9V battery. Remixed from https://www.thingiverse.com/thing:1257810
The lid is new as well, made to friction fit into place.
Mine is covered in some aluminum duct tape for shielding and to make a sort of hinge on the back to replace the battery. The case mounts to a 3/4" (17.3 mm) board.
Two versions have been uploaded. One with the clips and one without.
I printed the original buttons sunk 1 mm into the bed to make them shorter.