Used it many times

printed with ABS, I printed this to check my z-offset and layer height calibration. After I printed this, I got the other model who suggest adjust the z-offset while printing.
I believe we can also use that technique during printing this model, or we can use this model to validate our calibration
I made it thicker to test the extrusion multiplier. I wish you posted the exact holes size
@Cosmin It's not meant for a tolerance test but just a first layer test for seeing if your nozzle is at the right height and extruding well.
A wonderful quick first layer torture test! Great for fine tuning, and testing! Takes me less than 10 minutes to print too!