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  2. Sri Lankan units of measurement - Wikipedia

    en.wikipedia.org/wiki/Sri_Lankan_units_of...

    One ammonam was equal to 203.4 L. [1] One parrah = 1 ⁄ 8 ammonam, oneseer = 1 ⁄ 288 ammonam and the chundoo was equal to nearly half a pint. [2] Maccauly stated in 1818 that to the north of Colombo an Ammonam contained 16 Parahs, and 2 + 1 ⁄ 2 Ammonams equalled one Acre, but that to the south there were 8 Parahs to the Ammonam.

  3. Fathom - Wikipedia

    en.wikipedia.org/wiki/Fathom

    A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 m), used especially for measuring the depth of water. [1] The fathom is neither an international standard (SI) unit, nor an internationally accepted non-SI unit. Historically it was the maritime measure of depth in the English-speaking world but ...

  4. Metric Act of 1866 - Wikipedia

    en.wikipedia.org/wiki/Metric_Act_of_1866

    Dry Measures: Liquid Measures: Kiloliter: 1,000 liters: 1 cubic meter: 1.308 cubic yards: 264.17 gallons Stère-1 cubic meter-- Hectoliter: 100 liters: 1 ⁄ 10 cubic meter: 2 bushels & 3.35 pecks: 26.417 gallons Dekaliter: 10 liters: 10 cubic decimeters: 9.08 dry quarts: 2.6417 gallons Liter: 1 liter: 1 cubic decimeter: 0.908 dry quarts: 1. ...

  5. Metre sea water - Wikipedia

    en.wikipedia.org/wiki/Metre_sea_water

    The metre (or meter) sea water (msw) is a metric unit of pressure used in underwater diving.It is defined as one tenth of a bar. [1] [2]The unit used in the US is the foot sea water (fsw), based on standard gravity and a sea-water density of 64 lb/ft 3.

  6. List of obsolete units of measurement - Wikipedia

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

    Sack – originally a medieval unit of mass, equal to 26 stone (364 pounds, or about 165 kg). Since a unit of dry volume , equal to 24 imperial gallons (about 109 liters). Schoenus – a unit of area or length

  7. List of unusual units of measurement - Wikipedia

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

    An Olympic-size swimming pool holds over 2 acre-feet of water For larger volumes of liquid, one measure commonly used in the media in many countries is the Olympic-size swimming pool. [47] A 50 m × 25 m (164 ft × 82 ft) Olympic swimming pool, built to the FR3 minimum depth of 2 metres (6.6 ft) would hold 2,500 m 3 (660,000 US gal).

  8. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    For example, the freezing point of water is 0 °C and 32 °F, and a 5 °C change is the same as a 9 °F change. Thus, to convert from units of Fahrenheit to units of Celsius, one subtracts 32 °F (the offset from the point of reference), divides by 9 °F and multiplies by 5 °C (scales by the ratio of units), and adds 0 °C (the offset from the ...

  9. League (unit) - Wikipedia

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

    From 1630 to 1718 a millia was 5,564 feet (1,696 metres), making a geographical league of four millias equal 22,256 feet (6,784 m or 3.663 modern nautical miles). But from 1718 through the 1830s the millia was defined as the equivalent of just over 5,210 feet, giving a shorter geographical league of just over 20,842 feet (6,353 m or 3.430 ...