This diminutive case was designed for a 0.96" OLED Display and buttons for the OctoPrint "Micro Panel" Plugin.

It's just 40mm wide and 20mm deep and has knockouts to allow easy attachment to both 4040 and 2020 V Slot rails using M3 Button Head screws and the M3 T-Nut adapters (STL files supplied) which will allow the nuts to be used in V Slot rails.

The wiring exits through a choice of knockouts on the rear of the case positioned such that the V Slot grooves can be used to contain the cable which is then covered with Snap-in V Slot Covers (STL's supplied).