Benchoo Choo -- a Benchmarking tool

Created as an alternative testing device for 3d printers, This jolly little train is good for calibrating machine as it has a variety of hole tolerance and angle tests designed to identify printer problems or deficiencies.

Images are your guide that has tolerance and measurements if needed. The top surface has been provided with blank labelling areas, so that you may emboss or deboss your text to track filament types and brands.