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Imperial measure

The Imperial units or the Imperial system is a collection of English units, first defined in the Weights and Measures Act of 1824, later refined (until 1959) and reduced. The units were introduced in the United Kingdom and its colonies, including Commonwealth countries, but excluding the then already independent United States.

Wikipedia and Wikis

Imperial measure - Wikipedia
http://en.wikipedia.org/wiki/Imperial_measure

Other

Unit converters of 99.9% known units in 67 categories
http://www.unitconversion.org
a PDF file
http://physics.nist.gov/Document/sp811.pdf
Units of Measurement Regulations 1995
http://www.hmso.gov.uk/si/si1995/Uksi_19951804_en_ ...
Anglo-Saxon weights & measures
http://users.aol.com/jackproot/met/spvolas.html
Canada - Weights and Measures Act 1970-71-72
http://laws.justice.gc.ca/en/w-6/109089.html
NIST Handbook 44
http://ts.nist.gov/ts/htdocs/230/235/h442003.htm
British Weights And Measures Association
http://www.bwmaonline.com/
NIST Special Publication 811
http://physics.nist.gov/Pubs/SP811/
sizes.com
http://www.sizes.com/units/gallon_imperial.htm

Keywords and Synonyms

Imperial measure, Imperial units, Imperial system of units, Imperial Unit, Imperial measurement, Imperial system, British system, Imperial gallon, Imperial Measurements, British Imperial System, Imperial measurement system, Foot-pound-second, Foot-pound-second system, British Imperial System of weights and measures