|≈||approximately equal to|
|digits||indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)|
The butt was a measure of liquid volume equalling two hogsheads. This equated to 108 imperial gallons (490 l) for ale or 126 imperial gallons (570 l) for wine (also known as a pipe).
The cup currently used in the United States for nutrition labelling is defined in United States law as 240 ml.
|1 U.S. "legal" cup||=||240||millilitres|
|≈||8.12||U.S. customary fluid ounces|
|≈||8.45||imperial fluid ounces|