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  2. Metrication in Guatemala - Wikipedia

    en.wikipedia.org/wiki/Metrication_in_Guatemala

    Among the Guatemalan units of measurement some are based on old Spanish units; they include the vara and cuadra linear measurements; the vara cuadrada, the manzana and the cuerda units of area; and the libra, arroba, quintal and garrafón units of weight and volume.

  3. Cuerda - Wikipedia

    en.wikipedia.org/wiki/Cuerda

    The precise conversion is 1 cuerda = 3,930.395625 m 2. [2] The term "Spanish acre" instead has been used sometimes by mainlanders. [1] A cuerda and an acre have often been treated as equal because they are nearly the same size. According to Carlos Menocal Villagran, [3] in Guatemala, the term cuerda refers to a unit of area and can have various ...

  4. Square foot - Wikipedia

    en.wikipedia.org/wiki/Square_foot

    Comparison of 1 square foot with some Imperial and metric units of area. The square foot (pl. square feet; abbreviated sq ft, sf, or ft 2; also denoted by ' 2 and ⏍) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States, Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and Hong Kong.

  5. Puerto Rican units of measurement - Wikipedia

    en.wikipedia.org/wiki/Puerto_Rican_units_of...

    The precise conversion is 1 cuerda = 3,930.395625 m 2. The term "Spanish acre" instead has been used sometimes by mainlanders. A cuerda and an acre have often been treated as equal because they are nearly the same size. It continues to be an official unit of land measure in Puerto Rico today (2019). [1]

  6. Manzana (unit) - Wikipedia

    en.wikipedia.org/wiki/Manzana_(unit)

    A manzana is a unit of area used in Argentina and in many Central American countries, originally defined as 10,000 square varas in Spanish customary units. [1] In other Spanish-speaking regions, the term has the meaning of a city block.

  7. Foot-candle - Wikipedia

    en.wikipedia.org/wiki/Foot-candle

    In the US lighting industry, foot-candles are a common unit of measurement used by architects to calculate adequate lighting levels. Foot-candles are also commonly used in the museum and gallery fields in the US, where lighting levels must be carefully controlled to conserve light-sensitive objects such as prints, photographs, and paintings, the colors of which fade when exposed to bright ...

  8. Acre-foot - Wikipedia

    en.wikipedia.org/wiki/Acre-foot

    As the name suggests, an acre-foot is defined as the volume of one acre of surface area to a depth of one foot.. Since an acre is defined as a chain by a furlong (i.e. 66 ft × 660 ft or 20.12 m × 201.17 m), an acre-foot is 43,560 cubic feet (1,233.5 m 3).

  9. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.