British Units of Measurement | Imperial Units of Measurement

In Great Britain, the yard, the avoirdupois pound, the troy pound, and the apothecaries pound are identical with the units of the same names used in the United States. The tables of British linear measure, troy mass, and apothecaries mass are the same as the corresponding United States tables, except for the British spelling “drachm” in the table of apothecaries mass. The table of British avoirdupois mass is the same as the United States table up to 1 pound; above that point the table reads :
14 pounds = 1 stone
2 stones = 1 quarter = 28 pounds
4 quarters = 1 hundredweight
= 112 pounds
20 hundredweight = 1 ton = 2240 pounds

The present British gallon and bushel – known as the “Imperial gallon” and “Imperial bushel” – are, respectively, about 20 % and 3 % larger than the United States gallon and bushel. The Imperial gallon is defined as the volume of 10 avoirdupois pounds of water under specified conditions, and the Imperial bushel is defined as 8 Imperial gallons. Also, the subdivision of the Imperial gallon as presented in the table of British apothecaries fluid measure differs in two important respects from the corresponding United States subdivision, in that the Imperial gallon is divided into 160 fluid ounces (whereas the United States gallon is divided into 128 fluid ounces), and a “fluid scruple” is included. The full table of British measures of capacity (which are used alike for liquid and for dry commodities) is as follows–
4 gills = 1 pint
2 pints = 1 quart
4 quarts = 1 gallon
2 gallons = 1 peck
8 gallons (4 pecks) = 1 bushel
8 bushels = 1 quarter

The full table of British apothecaries measure is as follows :
20 minims = 1 fluid scruple
3 fluid scruples = 1 fluid drachm
= 60 minims
8 fluid drachms = 1 fluid ounce
20 fluid ounces = 1 pint
8 pints

Read Also :
General Tables of Units of Measurement
United States Units of Measurement Table
List of all Units of Measurement 
General Tables of Equivalents–Units of Length, Area and Volume

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