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It is a holdover from when spirits, wines and brandies, ale, and beer all had different standard measures of capacity. An Ale Gill (based on the Ale gallon) and a Beer Gill (based on the Beer gallon) were different sizes until standardized as Ale / Beer gallons in 1688, Beer gallons in 1803, and Imperial gallons in 1824. Half (imp.) 284 mL: 9.6 ...
In 1832, in the absence of any direction by Congress, the United States Treasury chose the second smallest gallon, the "Queen Anne gallon" of 231 cubic inches (3.785 litres), to be the official gallon in the United States for fiscal purposes. Sixteen US fluid ounces make a US pint (8 pints equals 1 gallon in both customary and imperial systems).
The common 55-gallon size of drum for storing and transporting various products and wastes is sometimes confused with a barrel, though it is not a standard measure. In the U.S., single servings of beverages are usually measured in fluid ounces. Milk is usually sold in half-pints (8 fluid ounces), pints, quarts, half gallons, and gallons.
The units of cubic length (the cubic inch, cubic foot, cubic mile, etc.) are the same in the imperial and US customary systems, but they differ in their specific units of volume (the bushel, gallon, fluid ounce, etc.). The US customary system has one set of units for fluids and another set for dry goods. The imperial system has only one set ...
Attempts to sell 3- or 4-liter jugs of milk, instead of gallons (3.785 L), have been largely unsuccessful, and such bottles are rarely seen in the United States. Milk remains sold in binary divisions of the gallon, with half-pints, pints, quarts and half-gallons being the primary sizes.
The quart (symbol: qt) [1] is a unit of volume equal to a quarter of a gallon. Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system. All are roughly equal to one liter. It is divided into two pints or (in the US) four cups.
Cooking weights and measures. Measuring spoons (metric) – 1 mL, 5 mL, 15 mL, 50 mL, 100 mL, 125 mL. Measuring spoons (customary units) In recipes, quantities of ingredients may be specified by mass (commonly called weight), by volume, or by count. For most of history, most cookbooks did not specify quantities precisely, instead talking of "a ...
Thermodynamics. In physics and engineering, in particular fluid dynamics, the volumetric flow rate (also known as volume flow rate, or volume velocity) is the volume of fluid which passes per unit time; usually it is represented by the symbol Q (sometimes ). It contrasts with mass flow rate, which is the other main type of fluid flow rate.