The file 'Customizable Ruler 3D Printer Model' is (stl,scad) file type, size is 453.8KB.
One ruler to ring them all.
(Or something like that.)
With this you can make rulers and scales for a wide variety purposes. The most obvious being a regular 30cm/12in school ruler (school_ruler.stl is attached if you want that), but you can do pretty much anything you can imagine: LEGO units, drafting scales, etc.
Also, you can alter the counting direction and number orientation, so you can use this for all sorts of jigs and tools. See depth_gauge.stl for one example.
depth_gauge.stl | 918.9KB | |
ruler.scad | 14.9KB | |
school_ruler.stl | 4.4MB |