[bezelbub]

The courts have ruled that for all land boundary issues with regard to dimensions published in feet, the surveyor is required to use the U.S. Survey Foot as physically standardized.

So, is the U.S. Survey Foot somewhere physically (abstractly or concretely) standardized without referring to the SI meter? Where?

[editor-surveyor]

Yes, at the NIST. It’s a platinum-iridium bar, and has been directly refered to in several court decisions.