Simple printer calibration models

I have an Overlord Pro printer which has a lot of issues. I searched Thingiverse for a usable test model set. Finally I have found one but the files in it was completely unusable. I get the model measures and remodelled them in OpenSCAD.

Since the idea is not mine I share all the files here.

Happy calibration!

EDIT:
- Added cylinder and wall tests as well.
- Corrected cylinder walls (were half of the desired thickness).
V2.1
- Added tall and wide blocks and cylinders. Prin