Grid north

Grid north

Grid north is a navigational term referring to the direction northwards along the grid lines of a map projection. It is contrasted with true north (the direction of the North Pole) and magnetic north (the direction of the Magnetic North Pole). Many topographic maps, including those of the United States Geological Survey and the Ordnance Survey, indicate the difference between grid north, true north, and magnetic north.


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  • grid north — noun The direction northwards along the grid lines of a map projection. The grid north for a particular map is usually chosen so that it deviates very little from the true north …   Wiktionary

  • grid north — The northerly or zero direction indicated by the grid datum of directional reference. Meridian relationship to grid north …   Aviation dictionary

  • grid north — koordinatinio tinklo kryptis į šiaurę statusas T sritis Gynyba apibrėžtis Kryptis į šiaurę pagal koordinatinį tinklą. atitikmenys: angl. grid north pranc. nord de la grille …   NATO terminų aiškinamasis žodynas

  • grid north —    The direction of a north south grid line on a map. Except for the north south grid line through the point of origin of the grid, it will differ slightly from true north [25] …   Lexicon of Cave and Karst Terminology

  • grid north — /grɪd ˈnɔθ/ (say grid nawth) noun the northerly or zero direction indicated by a grid (def. 5). Compare magnetic north, true north …  

  • grid north — The northerly or zero direction indicated by the grid datum of directional reference …   Military dictionary

  • grid magnetic angle — The angular difference in direction between grid north and magnetic north. It is measured east or west from grid north. A grid magnetic angle is sometimes called a grivation and/or grid variation …   Aviation dictionary

  • grid magnetic angle — Angular difference in direction between grid north and magnetic north. It is measured east or west from grid north. Also called grid variation; grivation …   Military dictionary

  • grid variation — The angular difference between grid north and magnetic north. It is measured east or west from grid north and is also called a grivation or grid magnetic angle …   Aviation dictionary

  • grid magnetic angle — noun the angular difference in direction between grid north and magnetic north, measured east or west from grid north. Also, grivation, grid variation …  

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