Octave (unit)

Octave is a British unit of volume used for measuring whisky.{{Cite book|title = Encyclopaedia of Scientific Units, Weights and Measures|url = https://archive.org/details/encyclopaediaofs0000card|url-access = registration|last = Cardarelli|first = François|publisher = Springer|year = 2003|isbn = 978-1-4471-1122-1|location = London|pages = [https://archive.org/details/encyclopaediaofs0000card/page/46 46]}}{{Cite web|url=https://www.maltmadness.com/whisky-lexicon/o-words.html|archive-url=https://web.archive.org/web/20190517215322/https://www.maltmadness.com/whisky-lexicon/o-words.html|url-status=usurped|archive-date=May 17, 2019|title=[O] - Whisky Lexicon (Scotch whiskey words)|website=www.maltmadness.com|access-date=2019-05-17}}{{Cite web|url=http://orrnamestudy.com/wtsmsrs.htm|title=WEIGHTS AND MEASURES - NOW AND THEN.|last=|first=|date=|website=orrnamestudy.com|access-date=2019-05-17}} It is approximately 16 gallons.