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  2. Ancient Roman units of measurement - Wikipedia

    en.wikipedia.org/wiki/Ancient_Roman_units_of...

    Ancient Roman units of length Roman unit English name Equal to Metric equivalent Imperial equivalent Notes digitus: finger: 1 ⁄ 16 pes 18.5 mm 0.728 in 0.0607 ft uncia pollex inch thumb 1 ⁄ 12 pes 24.6 mm 0.971 in 0.0809 ft palmus (minor) palm 1 ⁄ 4 pes 74 mm 0.243 ft palmus maior: palm length (lit."greater palm") 3 ⁄ 4 pes 222 mm

  3. List of obsolete units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_obsolete_units_of...

    Dimi (metric prefix) – a discontinued non-SI metric prefix for 10 −4 [7] Einstein – unit of energy, and a unit of amount of substance; Fanega – a unit of dry volume, and a unit of area; Fresnel – a unit of frequency; Garce – a unit of dry volume in India, and a unit of mass in Sri Lanka; Hobbit – a unit of volume, or, more rarely ...

  4. League (unit) - Wikipedia

    en.wikipedia.org/wiki/League_(unit)

    It was used along with the metric system for a while, but is long discontinued. A metric lieue was used in France from 1812 to 1840, with 1 metric lieue being exactly 4,000 m, or 4 km (about 2.5 mi). [4] It is this unit that is referenced in both the title and the body text of Jules Verne's novel Twenty Thousand Leagues Under the Seas (1870). [5]

  5. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    A metric ounce is an approximation of the imperial ounce, US dry ounce, or US fluid ounce. These three customary units vary. However, the metric ounce is usually taken as 25 or 30 ml (0.88 or 1.06 imp fl oz; 0.85 or 1.01 US fl oz) when volume is being measured, or in grams when mass is being measured.

  6. System of units of measurement - Wikipedia

    en.wikipedia.org/wiki/System_of_units_of_measurement

    Traditional Burmese units of measurement are used in Burma, with partial transition to the metric system. U.S. units are used in limited contexts in Canada due to the large volume of trade with the U.S. There is also considerable use of imperial weights and measures, despite de jure Canadian conversion to metric.

  7. History of measurement - Wikipedia

    en.wikipedia.org/wiki/History_of_measurement

    The troy pound (~373.2 g) used in England and the United States for monetary purposes, like the Roman pound, was divided into 12 ounces, but the Roman uncia (ounce) was smaller. The carat is a unit for measuring gemstones that had its origin in the carob seed, which later was standardized at 1/144 ounce and then 0.2 gram.

  8. Pace (unit) - Wikipedia

    en.wikipedia.org/wiki/Pace_(unit)

    The Byzantine pace (Ancient Greek: βῆμα, bḗma) was an adaption of the Roman step, a distance of 2½ Greek feet. [7] The double pace ( βῆμα διπλοῦν , bḗma diploûn ), meanwhile, was similar to the Roman unit, comprising 5 Greek feet.

  9. Uncia (unit) - Wikipedia

    en.wikipedia.org/wiki/Uncia_(unit)

    It survived as the Byzantine liquid ounce (Ancient Greek: οὐγγία, oungía) and the origin of the English inch, ounce, and fluid ounce. The Roman inch was equal to 1 ⁄ 12 of a Roman foot (pes), which was standardized under Agrippa to about 0.97 inches or 24.6 millimeters. [citation needed] The Roman ounce was 1 ⁄ 12 of a Roman pound. [1]