This is a 3D printed case for my Open Source STM32 Multimeter. It houses the board, provides a simple leg (to enable you to tilt the whole device) and also you can put on it stickers with button/banana jack functions (because you don't want to mistake the voltage and current measurement holes, trust me).
The board and features of the multimeter are further described here.
For the assembly you will need some M2 screws, washers and brass M2 insert nuts. Also I recommend that you stick rubber feet onto the designated spots, see the photos. Or alternatively, print rubber feet out of something like NinjaFlex.
However, SolidWorks design files included, so feel free to modify it to accept screws of your choosing.