The file 'Simple Ruler 3D Printer Model' is (stl) file type, size is 56.3KB.
A simple ruler I made with mm and in for very rough measurements. I use this often instead of my caliper because it is handy to have something where you can eyeball a dimension with some accuracy.
I used two different colors for the text and base, but the height difference should make it easy to read.
simple_ruler.stl | 270.7KB |