A short story on length | Nature Physics
The Last Original Standard Metre – Paris, France - Atlas Obscura
Meter Bars - Mueller Co. Gas Products Division
It's All Made Up – Old Structures Engineering
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To Promote DIY Metric Rulers in the 18th Century, Paris Placed Meter-Long Marble Blocks on Public Buildings - Core77
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National Bureau of Standards Replica Meter Standard | National Museum of American History
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Iron Standard Meter Bar - NBS-NIST Museum Artifacts - NIST Digital Archives
What Is Distance
How Did The Meter Get Its Length? : NPR
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measurement - Wavelength definition of the metre - History of Science and Mathematics Stack Exchange
National Bureau of Standards Replica Meter Standard | National Museum of American History
National Bureau of Standards Replica Meter Standard | National Museum of American History
measurements - Profile of a platinum-iridium meter bar - Physics Stack Exchange
To Promote DIY Metric Rulers in the 18th Century, Paris Placed Meter-Long Marble Blocks on Public Buildings - Core77
The measure of a metre
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How France created the metric system - BBC Travel
