This is a case for the GK-Mini Geiger counter kit. More info on the kit can be found by the link above. I am not the seller or designer of the kit, just a user who wanted a compact, portable enclosure. Note that I have version 1.5 of the kit. I have not tested this enclosure with the current version, but I expect it should work. This new case is based on my 1.5 version, and with input from the kit's designer. (The photo shows the older kit in the new case, which is why there are only three display screws.) If you have the earlier version with three standoffs, you should check out my other design here: https://www.youmagine.com/designs/geiger-counter-case Design goals/features: •Compact, easy to assemble design •Power switch •Second switch for backlight control or mute •Selector button •Space for two parallel SBM-20 tubes •Jacks for power, serial data, and audio allow for both tethered and standalone use