Hole calibration test

I have been making some designs that require holes and like many others have been finding that a 5mm or 10mm hole once printed is never 5mm or 10mm.
so here is a simple 50mm x 50mm x 10mm test block for holes in:
10mm
15mm
20mm
25mm

All holes are also 5mm from the closest 2 edges
I have been getting good results using Cura "hole horizontal expansion" in the shell section.

so for those that do not use a design program this may help you out a little.