Pint a limited extent in Commonwealth nations. In the United States, two pints are used: a liquid pint (≈ 473 ml) and a less-common dry pint (≈ 551 ml). Each of these pints is one-eighth of its respective gallon, but the gallons differ. This difference dates back to 1824, when the British Weights and Measures Act standardised various liquid measures throughout the British Empire, while the United States continued to use the earlier English measure. The imperial pint consists of 20 imperial fluid ounces and the US liquid pint is 16 US fluid ounces, making the imperial fluid ounce about 4%
Pint glass is now rarely the case and lined glasses are found mostly at enthusiasts' events such as beer festivals, serious cask ale pubs, and breweries' own bars. Beer in Australia is formally measured in metric units, but draught beer is commonly ordered and sold in glasses approximating imperial measures, including a 570 ml pint. (In the state of South Australia, "pint" refers to a 425 ml (¾ pint) glass, known as a schooner in the rest of Australia.) As in the UK, certified glassware must be used; the capacity of the beer glass is defined by either the brim or, where