Which is exactly what you are doing - adding an additional entity - a ruler. I see no reason why the laws of physics require a ruler so as far as I'm concerned it is an unnecessary additional entity. Under Occam it is for you to justify why this additional entity is necessary - in other words why the laws of physics require a ruler. Until and unless you do that Occam requires us to accept the reduced complexity, and fewer entity state where there is no ruler.
You are asserting that I am adding an entity but that is not Occam. It's adding unnecessary entities.
You have to justify your positive assertion that a rule setting entity is unnecessary for rules.
I shall quote you in my justification for a rule maker.
In which case I don't understand what you mean by an unconscious ruler - how could that thing unknowingly and unconsciously generate rules.
So not only are you agreeing that rules are generated, and I would add enforced. You are agreeing that something that is unconscious maybe unable to unknowingly and unconsciously generate rules.
Rules therefore are therefore more likely to proceed from a personal source.
Whatever we are left with the mystery of how the Laws exist if not dependent on that existence on time and space and how the laws which look abstract manage to enforce themselves on matter.