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  2. Metrication in the United States - Wikipedia

    en.wikipedia.org/wiki/Metrication_in_the_United...

    The legislation states that the federal government has a responsibility to assist industry, especially small business, as it voluntarily converts to the metric system of measurement. The legislation required most federal agencies to use the metric system in their procurement, grants, and other business-related activities by the end of 1992. [26]

  3. Metric Conversion Act - Wikipedia

    en.wikipedia.org/wiki/Metric_Conversion_Act

    The Metric Conversion Act of 1975 is an Act of Congress that was signed into law by U.S. President Gerald Ford on December 23, 1975. [1] It declared the metric system "the preferred system of weights and measures for United States trade and commerce", but permitted the use of United States customary units in all activities.

  4. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    United States customary units form a system of measurement units commonly used in the United States and most U.S. territories [1] since being standardized and adopted in 1832. [2] The United States customary system developed from English units that were in use in the British Empire before the U.S. became an

  5. System of units of measurement - Wikipedia

    en.wikipedia.org/wiki/System_of_units_of_measurement

    A system of units of measurement, also known as a system of units or system of measurement, is a collection of units of measurement and rules relating them to each other. Systems of measurement have historically been important, regulated and defined for the purposes of science and commerce .

  6. Imperial and US customary measurement systems - Wikipedia

    en.wikipedia.org/wiki/Imperial_and_US_customary...

    The imperial system of measure does not have an equivalent to the US customary system of "dry measure". In the international commodities markets, the barrel ( 42 US gallons , ≈159 litres) is used in both London and New York/Chicago for trading in crude oil and the troy ounce (≈31.10 grams) for trading in precious metals, except the London ...

  7. Comparison of the imperial and US customary measurement systems

    en.wikipedia.org/wiki/Comparison_of_the_imperial...

    The US customary system has one set of units for fluids and another set for dry goods. The imperial system has only one set defined independently of, and subdivided differently from, its US counterparts. By the end of the 18th century, various systems of volume measurement were in use throughout the British Empire.

  8. Plan for Establishing Uniformity in the Coinage, Weights, and ...

    en.wikipedia.org/wiki/Plan_for_Establishing...

    This law defined a survey grid system of 6–mile–square townships divided into 1–mile–square sections, with the defining unit being the chain, specifically Gunter's chain. This was the first unit of measurement designated into law by Congress. This law and the way it defined the survey grid ended debate over Jefferson's decimal system. [2]

  9. Metrology - Wikipedia

    en.wikipedia.org/wiki/Metrology

    A national measurement system (NMS) is a network of laboratories, calibration facilities and accreditation bodies which implement and maintain a country's measurement infrastructure. [8] [9] The NMS sets measurement standards, ensuring the accuracy, consistency, comparability, and reliability of measurements made in the country. [57]