Height presision test

By printing this STL you will be able to check the Z precision as well as the calibration of your printing plate.
This tower has 25 steps from 1mm to 25mm, each step has an increment of 1mm.
Print with a layer height whose multiple is 1mm, for example 0.05mm.
After printing, I advise you to measure each level with a caliper or ideally a micrometer.
Calculate the average of (the height of the landing measure - the ideal height of the landing) for example ((0.72-1) + (1.58-2) + (2.66-3) ...) / 25 = positive or negative position of your printing plate relative to its ideal position.
You can place a tower at each corner to verify that your printing plate is parallel to the screen.
Please note that resin shrinkage and UV illumination uniformity may vary the results.