When France switched to the meter in the 18th century, they placed 16 of these across Paris so that people would be able to tell exactly how long a meter is. :
The measure of a metre
Platinum-Iridium Meter Bar
Meter Bar 27
Arts et Métiers | A Man In Paris
The Unfashionable Human Body: Standard Meter Bar
Take a weight off: 'Grand K' kilo being retired
The Place Vendôme standard meter restored and reinstalled | Flickr
The Last Original Standard Metre – Paris, France - Atlas Obscura
To Promote DIY Metric Rulers in the 18th Century, Paris Placed Meter-Long Marble Blocks on Public Buildings - Core77
Made to Measure - Delambre and Borda and the Invention of the Metre | Eiffel's Paris — an Engineer's Guide
File:Paris 1er - place Vendôme - mètre étalon.JPG - Wikimedia Commons
Where is the standard metre kept? - Quora
One of the standard metre lengths set up in France in the 1790s Stock Photo - Alamy
Mètre Étalon: The Last Original Standard Meter in Paris via @fotostrasse
World's first Meter Model. France (1799) figures out the Meter. History, intrigue & more! ooh! - YouTube
Mètre Étalon: The Last Original Standard Meter in Paris via @fotostrasse
National Bureau of Standards Replica Meter Standard | National Museum of American History
How France created the metric system - BBC Travel
History of the metre - Wikipedia
Mètre Étalon: The Last Original Standard Meter in Paris via @fotostrasse
Jon Bruner on Twitter: "The NIST Museum is amazing; here I'm posing with a replica of the standard kilogram, and a retired standard meter stick. (The meter is now just defined as
