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1 jan 1870 ano - 1870 Wilmot diseñó un micrómetro que medía milésimas. J.R. Brown y Lucian Sharpe diseñan el primer micrómetro mecánico.
Adicionado na linha do tempo:
Metrología
By
Erick Piña
12 jan 2018
0
0
1622
Data:
1 jan 1870 ano
Agora
~ 155 years ago
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