Delta Calibration & Validation Tool

It's a calibration thing that you print, then you validate the result with the PDF. It tells you if your towers are aligned correctly and your diagonal rods lenght accurate.

With these informations, you can then update your delta 3D printer firmware for dimensions accurate printing.
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You can use my [Marlin4Delta](http://clefranc.github.io/Marlin4Delta) fork for an easy firmware configuration. Repetier is also a good firmware with all necessary parameters.

Here is my inspiration and in