3D Printer steps/mm Calibration Board

This is a basic steps/mm calibration board, measuring 40x40x4mm (XYZ) and with X and Y axes marked. Freecad, STL and GCode (sliced with Cura) files are provided, plus a LibreOffice Calc spreadsheet that I use to store my custom settings and to calibrate (fine tune) "steps/mm" (M92) parameters.

After printing it on my Mp Select mini 3D Printer, I measure it with a digital caliper and transfer the values to the spreadsheet (yellow column). The results are displayed on the green column. Rinse an