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The gallon is a unit of volume in British imperial units and United States customary units.. The imperial gallon (imp gal) is defined as 4.546 09 litres, and is or was used in the United Kingdom and its former colonies, including Ireland, Canada, Australia, New Zealand, India, South Africa, Malaysia and some Caribbean countries, while the US gallon (US gal) is defined as 231 cubic inches (3. ...
The former Weights and Measures office in Seven Sisters, London (590 Seven Sisters Road). The imperial system of units, imperial system or imperial units (also known as British Imperial [1] or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments.
There was a US dry gallon, which was 96.8939% of an imperial gallon (and exactly 1 + 15121 / 92400 of a US gallon), but this is no longer used and is no longer listed in the relevant statute. After the United States Declaration of Independence the units of measurement in the United States developed into what is now known as customary units.
[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.
Volume may be measured either in terms of units of cubic length or with specific volume units. The units of cubic length (the cubic inch, cubic foot, cubic mile, etc.) are the same in the imperial and US customary systems, but they differ in their specific units of volume (the bushel, gallon, fluid ounce, etc.).
2 imperial pints, 1 imperial quart, or a quarter of an imperial gallon. Referred to as a "40" or “40-pounder” in Canada (as in 40 Imperial ounces; also used for spirits) and a litre in the United States. 40 (US) 1.183 L: 40 US fl oz: 2.08 imp pt: 2.5 US liquid pints. Might have been inspired by the Canadian 40 imp fl oz bottle.
From the mid 15th century until 1824 the beer hogshead was defined as 54 ale or beer gallons. hogshead (Ale) (Imperial), hogshead (Beer) (Imperial) In the United Kingdom and its colonies, with the 1824 adoption of the imperial system, the ale or beer hogshead was redefined to be 54 imperial gallons. The ale or beer hogshead is therefore exactly ...
A hogshead of brandy was approximately equal to 56–61 gallons (0.255–0.277 m 3). [citation needed] Eventually, a hogshead of wine came to be 52.5 imperial gallons (238.669725 L) (or 63 US gallons), while a hogshead of beer or ale came to be 54 gallons (249.54221 L with the pre-1824 beer and ale gallon, or 245.48886 L with the imperial gallon).