Archives nationales de France - [Le Saviez-vous ?] Le 7 avril 1795, le système métrique est adopté en France. Aujourd'hui, un mètre étalon est conservé aux Archives nationales, dans la célèbre Armoire
![File:Cathédrale de Rodez - les stalles 1897 planche lithographiée n°72 - Archives nationales.jpg - Wikimedia Commons File:Cathédrale de Rodez - les stalles 1897 planche lithographiée n°72 - Archives nationales.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/77/Cath%C3%A9drale_de_Rodez_-_les_stalles_1897_planche_lithographi%C3%A9e_n%C2%B072_-_Archives_nationales.jpg)
File:Cathédrale de Rodez - les stalles 1897 planche lithographiée n°72 - Archives nationales.jpg - Wikimedia Commons
![Historical length standards C016 / 2046 available as Framed Prints, Photos, Wall Art and Photo Gifts Historical length standards C016 / 2046 available as Framed Prints, Photos, Wall Art and Photo Gifts](https://www.mediastorehouse.com/t/173/historical-length-standards-c016-2046-9216827.jpg.webp)
Historical length standards C016 / 2046 available as Framed Prints, Photos, Wall Art and Photo Gifts
![Portland's Forestry Building, constructed as part of the Lewis and Clark Centennial Exposition of 1905, featured 54 two-metre-thick raw tree trunks. : r/bizarrebuildings Portland's Forestry Building, constructed as part of the Lewis and Clark Centennial Exposition of 1905, featured 54 two-metre-thick raw tree trunks. : r/bizarrebuildings](https://i.redd.it/mce61qivx8ia1.jpg)
Portland's Forestry Building, constructed as part of the Lewis and Clark Centennial Exposition of 1905, featured 54 two-metre-thick raw tree trunks. : r/bizarrebuildings
![Dr David Boyce on Twitter: "A metre stick! Ok try not to swoon in excitement. In fact, this is a second generation metre stick. It was made by direct comparison to the Dr David Boyce on Twitter: "A metre stick! Ok try not to swoon in excitement. In fact, this is a second generation metre stick. It was made by direct comparison to the](https://pbs.twimg.com/media/EECnRzdXsAAajUn.jpg:large)
Dr David Boyce on Twitter: "A metre stick! Ok try not to swoon in excitement. In fact, this is a second generation metre stick. It was made by direct comparison to the
![File:Convention signée sur les modalités de construction Et d'exploitation de la Tour de 300 mètres. 1 sur 8 - Archives Nationales - F-12-3770.jpg - Wikimedia Commons File:Convention signée sur les modalités de construction Et d'exploitation de la Tour de 300 mètres. 1 sur 8 - Archives Nationales - F-12-3770.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/f/fe/Convention_sign%C3%A9e_sur_les_modalit%C3%A9s_de_construction_Et_d%E2%80%99exploitation_de_la_Tour_de_300_m%C3%A8tres._1_sur_8_-_Archives_Nationales_-_F-12-3770.jpg)