The file 'JME Calibration Cube 3D Printer Model' is (stl) file type, size is 23.3KB.
I designed this calibration cube to have a 20mm exterior and 10mm interior so that I can measure a couple of different components for accuracy. I also added my logo in the side which will challenge some finer printing accuracy as well:
gomZZQMrbWt.stl | 93.0KB |