SI

The International System of Units (abbreviated SI from the French phrase, Système International d'Unités) is the most widely used system of units. It is the most common system for everyday commerce in the world, and is almost universally used in the realm of science.

External links

Official

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• BIPM (SI maintenance agency) (home page)
• BIPM brochure (SI reference)
• ISO 1000:1992 SI units and recommendations for the use of their multiples and of certain other units, with its price tag of 99 Swiss francs for a 22 page, coverless pamphlet showing why the public is sometimes a little slow to pick up on their recommendations.

Information

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• US NIST reference on SI
• chart
• SI - Its history and use in science and industry
• A Dictionary of Units of Measurement
• Cyrillic transcription of SI symbols
• Judson, Lewis B., Weights and Measures Standards of the United States: A brief history, NBS Special Publication 447, orig. iss. October 1963, updated March 1976 (46 page PDF file)
• Metric system and conversion tables (courtesy French property advice)
• metre-info - an encyclopaedia of all metric units

Pro-metric pressure groups

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• The UK Metric Association
• The US Metric Association