The rundlet is an archaic unit-like size of

wine Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different varieties of grapes and strains of yeasts are m ...

casks once used in

Britain Britain most often refers to: * The United Kingdom, a sovereign state in Europe comprising the island of Great Britain, the north-eastern part of the island of Ireland and many smaller islands * Great Britain, the largest island in the United King ...

. It was equivalent to about 68 litres. It used to be defined as 18 ''wine gallons''—one of several gallons then in use—before the adoption of the

imperial system The imperial system of units, imperial system or imperial units (also known as British Imperial 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 th ...

in 1824, afterwards it was 15 ''imperial gallons'', which became the universal English base unit of volume in the British realm.

References

Units of volume Wine terminology British wine {{wine-stub