October 21, 2017
Description
Test rings for X and Y calibration in different sizes from Ø40 to Ø110 with squares inside.
Can be placed on top of each other on printbed without touching (use the same coordinate for all centers).
I made the calibration correct on one spot, which led to problems - and needed to check a larger variation of measurements.
Text on the top makes it easy to remember size and orientation.
License:
Creative Commons - Attribution