Pound (mass) has been defined as exactly . In the United Kingdom, the use of the international pound was implemented in the Weights and Measures Act 1963. An avoirdupois pound is equal to 16 avoirdupois ounces and to exactly 7,000 grains. The conversion factor between the kilogram and the international pound was therefore chosen to be divisible by 7, and an (international) grain is thus equal to exactly . In the UK, the process of metrication and European units of measurement directives were expected to eliminate the use of the pound and ounce, but in 2007 the European Commission abandoned the requirement
Animal pound Animal pound An animal pound is a place where stray livestock were impounded. Animals were kept in a dedicated enclosure, until claimed by their owners, or sold to cover the costs of impounding. The terms "pinfold" and "pound" are Saxon in origin. "Pundfald" and "pund" both mean an enclosure. There appears to be no difference between a pinfold and a village pound. The term "pinfold" seems to be more popular in the north and east of England, whilst in the south and west the term "pound" is more popular. The person in charge of the 'pinfold' was the 'pinder', giving