I made this tool for a friend that's into wood turning.  It's used to set tool depth in a jig before it gets put to a grinding wheel for sharpening.  Mainly to ensure consistency every time it's sharpened.  This means less metal from the tool is removed each time, which leads to longer tool life. The Prusa slicer keeps tagging the file name with PLA, but it has been sliced for PETG.  The picture I'm using here is from a print I made that was actually 2.25 inches because I made a miscalculation when I was designing it.