Calibration Squares
thingiverse
Here's a breakdown of HobbyHoarder's calibration squares, condensed into individual prints for single-axis testing. Simply reposition the squares in your slicer to match your chosen axis, then print each test separately. No need for complexity - just straightforward printing. The original source files I found printed four squares at once, which worked fine, but added unnecessary time and waste if you only needed one square per axis.
Download Model from thingiverse
With this file you will be able to print Calibration Squares with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Calibration Squares.