|≈||approximately equal to|
|digits||indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)|
The acre-foot is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, and river flows.
The gill (pronounced/ˈdʒɪl/) or teacup is a unit of measurement for volume equal to a quarter of a pint. It is no longer in common use, except in regard to the volume of alcoholic spirits measures.
|1 imperial gill||≡ 5 imperial fluid ounces|
|≡ 1⁄32 imperial gallon|
|≡ 1⁄4 imperial pint|
|≡ 142.0653125 ml|
|≈ 142 ml|
|≈ 1.2 US gills|