So this is some nerdy dotted paper. Note that this image is a zoom in, the dots are smaller and lighter when printed.
One base unit (1 cm, 1 inch, or quarter inch). On top of that you get 4×, 1×, ½×, and ¼× gray dots, plus a red ⅓× overlay and green every-third 1× dot so you can actually see the 3 vs 4 rhythm.
You can print this in a4 or letter, and in any one of the 3 base units.
Of course, the code is open so you can tweak the dot sizes and colors to your heart's content.
Or, you can just dig into the output directory and download the page and run with it.
The pdfs have two duplicate pages in each to help make it easy to do double sided.