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1 Jan 1799 Jahr - Se deposita en los archivos de Francia el primer prototipo del metro, formado por una regla de platino sin inscripciones ni marcas.

Zugefügt zum Band der Zeit:

metrologia

ByJorge guarneros

17 Jul 2020

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0

684

Datum:

1 Jan 1799 Jahr

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~ 226 years ago

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