On May 20, 1875, representatives from 17 nations
{ Argentina, Austria-Hungary, Belgium, Brazil, Denmark, France, Germany, Italy, Peru, Portugal, Russia, Spain, Sweden and Norway, Switzerland, Ottoman Empire, United States of America, and Venezuela}
signed the Metre Convention (also known as the Treaty of the Metre) in Paris
creating a unified framework for international trade and scientific collaboration.
The International Bureau of Weights and Measures (BIPM) in France continues to maintain international measurement standards.
Over 99% of countries now have mandatory metric laws.
The U.S. National Institute of Standards and Technology (NIST) has stated that only three countries still lag behind.
Liberia, Myanmar and the United States.
Yacht brokers in these three countries are advised to include metric lengths for International buyers