This is a 0.2 mm bed leveling print.

This print is one I generated out of frustration. I use it regularly when switching between ABS and PLA (since the heated print surface temperature will alter the shape of the print surface).

This print will place 5 squares - 4 at each corner and one in the middle. If a square doesn't stick, you need to raise the bed a little on this corner. If your printer makes a clicking noise when trying to print a square, you need to lower your bed a little on this corner

I sometimes adjust the bed mid-print to try and get the squares to look just right. If you can get all 5 squares to print, your bed is level..