This is a case for the Labrador USB device that provides you with an oscilloscope, Signal Generator, Multi-meter and more. The actual device is available from espotek.com and the software is maintained on GitHub.com/EspoTek.

The board as delivered is very small and great as a breadboard device. But I wanted a device that I could throw in my desk and pull out when I wanted to look at a signal and not set up my 10kg Tektronix scope. So I created a thing that would allow me to hold a 70x90cm prototype board and mount some BNC connectors.

The BNC connectors were purchased on eBay and the item# is 111223480693. Others might also work, but my box was built around this one. the 80x90 prototype board is available from multiple sources. I purchased mine on Amazon.

I have included two "lids" - one has labels embossed on it while the other one is blank. I did not expose all the functionality of the Labrador so you might make other choices. You can add your own labels with Tinkercad or the old fashion way with a label maker.

I used supports on the lid with the writing because I printed it face up. Not sure if that is necessary. Make sure your retraction setting are optimized as the writing can get stringing requiring you to clean it up with a razor blade.

The screws are just M3 and the holes are pre-tapped. I would run the screw in anyway to break in the threads. Note that there were some corners snipped off the prototype board to allow it to fit. I would probably take more off if I was doing this again as it can make the screws difficult to thread.