Calibration Ruler Stand

Summary Hi all, I designed these stands for the calibration ruler. It allows the ruler to be at a 45 degrees angle and in a 90 degrees angle so that it can ease axis the calibration procedure. At the bottom side, I attached a piece of rubber (same as used for chair feet) so that they don't slide over the heatbed. This calibration ruler is used for the calibration procedure of the steps/mm of the printer or CNC machine. I have a video explaining the calibration procedure (not using the stands) and it can be found here: https://youtu.be/ZfqeTzc3NpM NOTE: please rotate the part in your slicer as per the picture.