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-› national geodetic vertical datum of 1929
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Geography Categories
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national geodetic vertical datum of 1929
Reference surface established by the U.S. Coast and Geodetic Survey in 1929 as the datum to which relief features and elevation data are referenced in the conterminous United States; formerly called "mean sea level 1929."
See also: planetable , chart, aeronautical , low water line , sea level (water level) , feature separation |
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Dictionary of Cartography INDEX:List of Terms: Terms beginning with "A", Page 1 |
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Page Number:
1 A: Page 1 of 1.
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