Case for Chinese Component Tester

- Fits my tester model with round blue button. Dunno what they call it. Bought early 2020 from AliExpress.
- Requires nuts and bolts which fit the tester mounting holes to assemble, not sure about sizes.
- Designed to use minimal filament/print quickly compared to other designs I could find.
- Has compartment for 9V battery.
- Parts fit with considerable tolerance (~0.5 mm).

Known issues:
- Has a problem where you will need to cut a slot in the back with a knife to allow the oscillator crystal to exist. If I ever do a revision I will fix this. Marked 'work in progress' for this reason. Otherwise this is working perfectly fine for me.

This design dates from a time I almost exclusively used thin walls. This could even be injection molded economically although it was never intended. I still don't like chunky designs, but working with parts which require high structural strength has forced me to reconsider since.