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The Metre Convention determined how we measure the world

  • Delegates from 17 countries signed the Metre Convention in Paris on May 20, 1875, establishing a global measurement system.
  • The need for standardisation grew amid rapid scientific progress, expanding industrial projects, and increasing global trade in the mid-19th century.
  • The treaty established an official organization near Paris responsible for maintaining global measurement standards, providing a foundation for advancements in science, technology, and international trade.
  • The BIPM now governs the International System of Units , which supports everything from smartphone manufacturing to aerospace, with 64 member states collaborating.
  • This system's global adoption enhances international trust, drives scientific accuracy, and prevents costly errors, as seen in incidents like the Mars Climate Orbiter failure.
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Lean Right

Today's anniversary is nothing other than the metre convention. That is, the agreement that forms the foundation of the standardized world. A world that has now existed for 150 years. Because who wants to suddenly discover that their apartment has suddenly become smaller or that the bathroom scales have been wrong all these years?

·Stockholm, Sweden
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Lean Right

On May 20, 1875, the "Meter Convention" was signed. Until then, there had been no uniform measure.

·Vienna, Austria
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In the latest episode of the video series "The Measured World" dedicated to the 150th anniversary of the Metric Convention, we will discuss a classic riddle: which is heavier, a kilo of watt or a kilo of gold? Allar Pärn, a specialist in the field of measurement and standard-setting at Metrosert, will help you find the answer.

·Estonia
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  • 40% of the sources are Center, 40% of the sources lean Right
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Daily Maverick broke the news in South Africa on Monday, May 19, 2025.
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