Gay-Lussac—alcohol strength measured by the number of liters of pure ethanol in 100 liters of wine
14.8 degrees Gay Lussac = 26 degrees proof Sykes
24.5 degrees = 40 degrees proof
1 pound sterling = 20 shillings (s.); 1 shilling = 12 pence (p.)
1 pint = 0.125 imperial gallon = 0.567 liter
1 imperial gallon = 4.546 liters = 6 bottles
1 U.S. gallon = 3.788 liters = 5 bottles
1 hectoliter = 100 liters = 22 imperial gallons = 26.4 U.S. gallons
Port: pipe = 522.5 liters
Sherry: butt = 480 liters
Bordeaux: hogshead = 224 liters; tun = 900 liters
Champagne: demiqueue = 183 liters; butt = 200 liters
California: barrel = 190 liters (50 U.S. gallons)
Australia: hogshead = 270–295 liters (60–65 imperial gallons)
1 hectare = 2.47 acres
1 aranzada (Jerez) = 0.45 hectare = 1.05 acres