I've made a case for my DSO 138 oszilloskope. For the design I used a model for that board I found on the internet. It fits good but it is recommended to loosen the glue at the back of the LC Display and put some foam behind. As a second recomendation: use the ironing function for the top layer in your slicing programm. That will fix the gaps in letters.
I uploade a slightly fixed Version with a "reset" and corrected the Trigged from the PCB with Triggered.
The trigger LED can be easy desoldered from the PCB and resoldered with some wires to it.
To screw the backplate you can use simple wood screws with a max. lengh of 30mm
Two Top Cases:
with "Ozilloskop" named Casetop
with "Oscilloscope" named Casetop_oscilloscope