U.S. Department of Commerce

U.S. Metric Association (These folks need a lot of help. Please volunteer, join, donate. I have.)

U.K. Metric Association (United Kingdom = U.K.)

The Reddit Metric Group

Coming soon: Law, reports, and other things.

Above is the most fun report of all. You can access it here, but be forewarned, it is 312 pages long. (PDF)

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