This model was created to help test tune your printer to remove ghosting problems. It is useful as is has sharp 90° corners, areas of just walls, areas that include infill, indentations, and a 45° section. Very helpful is a built in ruler where each shot hash mark is 2mm and long one is in 10mm intervals.

Part altogether is 100x100mm, with three sections in 50mm (X, Y, XY in 45°)

It can also be used for X and Y Estep calibration as it is 100mm long in each axis.