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Plaque comparing the old units of measure and the Metric Decimal System, in the loggia of Palazzo Pretorio (XII cent.), headquarters of the Mine Museum, Montecatini Val di Cecina.
Plaque comparing the old units of measure and the Metric Decimal System, in the loggia of Palazzo Pretorio (XII cent.), headquarters of the Mine Museum, Montecatini Val di Cecina.
© Institute and Museum of the History of Science / Simona Filardo

Last update 03/gen/2008