This simple tool is an easy way to calculate the length of any fillet or chamfer up to 50mm on each side. Each small line is 1mm, and the long lines represent 5mm. It is perfect for anyone making a CAD model off of an already existing part. I recommend using a 0.4mm nozzle with 0.2mm layer height, swapping filament after the 8th layer for contrast. A pre sliced Gcode is in the files for anyone with a Prusa MK4.