This remix is made smaller to fit a 13mm ruler and to include one side guide to the flat surface.

It prints easily. Just put the side guide in place carefully on a flat surface, eventually with the help of another square, and poor a drop of CA bond. It is ready to use.

The rest is more or less the same. It still requires a 4mm bolt to be completed.

The clip is equipped with a piece of bike tire inner tube to have the ruler sliding or not in just a quarter turn of the button. Again, CA bond is your best friend to stick the inner tube piece in place.