About this 3D model

Three 60mm long (in direction of calibration) rectangles with letters to denote which came from which axis. Print slowly and hollow all at once with single walls and calibrate your X, Y, Z, axes and get ideas for improving your Extruder, Cooling, and Bridging! 1 cheap print does it all--total weight of hollow was .3 OZ! Each rectangle measures 60 x 10 x 10 in various directions. (Sorry for my not up-to-par print quality)