Case for DIY Geiger Kit. = https://sites.google.com/site/diygeigercounter/ Warning: I haven't printed this yet so I can't attest to the fit and finish. I will update when I've printed it. There are smaller more cube-like cases made for this particular geiger kit that also have room for a tube. This particular case was originally designed for using an external connection, (BNC), to attach either a tube or pancake sensor. A hold for that connector would have to be drilled out by hand. For the battery compartment there should be room for a generic 4-cell AA battery pack. This was made with Design123D.