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The quart (symbol: qt) [1] is a unit of volume equal to a quarter of a gallon. Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system. All are roughly equal to one liter. It is divided into two pints or (in the US) four cups. Historically, the ...
The quarter of wine was a gallon larger than a hogshead: [15] since the wine gallon was considered to be 231 cubic inches, [17] the measure was 242.27 litres. The ale gallon was 282 cubic inches, [18] meaning the quarter of ale was 295.75 litres. Cardarelli also says it can vary from 17 to 30 imperial gallons for liquor. [19]
In 1824, these units were replaced with a single system based on the imperial gallon. [a] Originally defined as the volume of 10 pounds (4.54 kg) of distilled water (under certain conditions), [b] then redefined by the Weights and Measures Act 1985 to be exactly 4.546 09 L (277.4 cu in), the imperial gallon is close in size to the old ale gallon.
As an imperial fluid ounce is 96.076% of an US fluid ounce, this means that one imperial gallon, quart, pint, cup and gill are all equal to 1.20095 of their US counterparts (i.e. 0.96076 × 20/16 = 1.20095). Historically, a common bottle size for liquor in the US was the "fifth", i.e. one-fifth of a US gallon (or one-sixth of an imperial gallon ...
Volume is a measure of regions in three-dimensional space. [1] It is often quantified numerically using SI derived units (such as the cubic metre and litre) or by various imperial or US customary units (such as the gallon, quart, cubic inch). The definition of length and height (cubed) is interrelated with volume.
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Both the 42-US-gallon (159 L) barrels (based on the old English wine measure), the tierce (159 litres) and the 40-US-gallon (150 L) whiskey barrels were used. Also, 45-US-gallon (170 L) barrels were in common use. The 40 gallon whiskey barrel was the most common size used by early oil producers, since they were readily available at the time.
[nb 3] The Queen Anne wine gallon of 231 cubic inches was adopted in 1707, and still serves as the definition of the US gallon. A US tun is thus the volume of a rectangular cuboid with dimensions 36 by 38.5 by 42 inches. When the imperial system was introduced the tun was redefined in the UK and colonies as 210 imperial gallons.