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21 jan 1799 ano - 1799 Se deposita en los primeros archivos de Francia el primer prototipo del metro, formado por una regla de platino sin inscripciones ni marcas
Adicionado na linha do tempo:
Metrología
By
Erick Piña
12 jan 2018
0
0
1622
Data:
21 jan 1799 ano
Agora
~ 226 years ago
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