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square chain (US Survey) sq ch ≡ 66 ft (US) × 66 ft (US) = 1 ⁄ 10 US survey acre ≈ 404.6873 m 2: square foot: sq ft ≡ 1 ft × 1 ft: ≡ 9.290 304 × 10 −2 m 2: square foot (US Survey) sq ft ≡ 1 ft (US) × 1 ft (US) ≈ 9.290 341 161 3275 × 10 −2 m 2: square inch: sq in ≡ 1 in × 1 in: ≡ 6.4516 × 10 −4 m 2: square ...
The National Institute of Standards and Technology formerly contended that customary area units are defined in terms of the square survey foot, not the square international foot, [17] but from 2023 it states that "although historically defined using the U.S. survey foot, the statute mile can be defined using either definition of the foot, as is ...
In the U.S., the Mendenhall Order of 1893 tied the length of the U.S. yard to the meter, with the equivalence 39.37 inches = 1 meter, or approximately 0.914 401 828 803 658 meters per yard. In 1959, the international yard and pound agreement established the "international" yard length of 0.9144 meters, upon which both the customary U.S. and ...
The table below lists units supported by {{convert}}. More complete lists are linked for each dimension. For a complete list of all dimensions, see full list of units. {{Convert}} uses unit-codes, which are similar to, but not necessarily exactly the same as, the usual written abbreviation for a given unit. These unit-codes are displayed in ...
Many local zoning laws are defined in feet/square feet. Conversion of units for surveyors are not simple, and complex decisions are frequently required (such as non-universal conversion factors, soft/hard conversions, number rounding). Example of road system in a PLSS area; Nebraska Example of road system in a non-PLSS area; North Carolina
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These efforts are known as "High Accuracy Reference Network" (HARN) or "High Precision GPS Network" (HPGN). In addition, the basic unit of distance used is sometimes feet and sometimes meters. Thus a fully described coordinate system often looks something like: "Washington State Plane North, NAD83 HARN, US Survey feet".
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