All About Trivia

Monday, June 30, 2008

What is the Most Accurate Kilogram in the World?


The world's most accurate kilogram is a cylinder made of platinum and iridium, made in 1889, and maintained at the Bureau International des Poids et Mesures (BIPM) at Sèvres near Paris, France. The kilogram is the only base SI unit of measurement whose definition is still based on a physical prototype.

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