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History
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A measuring tape with inches
A measuring tape with inches
A fire hydrant marked as 3-inch
A fire hydrant marked as 3-inch
Mid-19th-century tool for converting between different standards of the inch
Mid-19th-century tool for converting between different standards of the inch
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The former Weights and Measures office in Seven Sisters, London
The former Weights and Measures office in Seven Sisters, London
Units of measurement, Palazzo della Ragione, Padua
Units of measurement, Palazzo della Ragione, Padua
An example of metrication in 1860 when Tuscany became part of modern Italy (ex. one "libbra" = 339.54 grams)
An example of metrication in 1860 when Tuscany became part of modern Italy (ex. one "libbra" = 339.54 grams)