50 years after the Metric Conversion Act the U.S. is still stuck in the past using inches, pounds and gallons

December 23, 2025, marks the 50th anniversary of the Metric Conversion Act, designed to bring US weights and measures in line ...
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50 years since Metric Conversion Act: What went wrong?

Former President Gerald Ford signed the Metric Conversion Act 50 years ago. However, he did not make metric adoption mandatory, and the efforts fell flat.