Note that the recommended decimal sign or marker for use in the United States is the dot on the line, which is used to separate whole numbers from parts. The simplified table below shows common metric prefixes and the relationship with their place values. The following table of 24 SI prefixes ranging from 10 30 to 10 −30 are currently recognized for use.
In certain cases, particularly in scientific usage, it becomes convenient to provide for multiples larger than 1000 and for subdivisions smaller than one-thousandth. In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth. Values of quantities are expressed using Arabic symbols for numbers paired with a unit symbol, often with a prefix symbol that modifies unit magnitude. The National Conference on Weights and Measures (NCWM)Ī benefit of the SI (International System of Units) is that written technical information is effectively communicated, transcending the variations of language – including spelling and pronunciation.Weights & Measures Resources Expand or Collapse.Electric Vehicle Fueling and Submetering.National Working Groups Expand or Collapse Resources for Continuing Education and Training.Legal Metrology Devices Expand or Collapse.Laws and Regulations Expand or Collapse.Laboratory Metrology Expand or Collapse.International Legal Metrology Expand or Collapse.
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