Rostock rod length calibrator

This is a calibration print designed to test the rod length settings, and compensate for wall thickness errors. To print: print with 1-2 perimeters, and no fill/top/bottom (they're not needed). DO NOT REMOVE FROM THE BED (or make a note which way the arm with the circle faces) as it matters which arms correspond to each tower. To use: measure the distance from the outside of one of the squares to the opposite side of the center hexagon. Also measure the outside of that same square to the ins