Data and attributions
Data and attributions
Where the terrain and the teaching come from.
Terrain data
| Source | Publisher | Used for |
|---|---|---|
| 3D Elevation Program (3DEP) | U.S. Geological Survey | Elevation and contour lines on maps of real regions |
| National Hydrography Dataset (NHD) | U.S. Geological Survey | Streams, rivers, lakes, and other water |
| National Land Cover Database (NLCD) | U.S. Geological Survey, Multi-Resolution Land Characteristics Consortium | Vegetation and land cover |
| National Transportation Dataset (NTD) | U.S. Geological Survey | Roads and trails on maps of real regions |
Data courtesy of the U.S. Geological Survey. USGS data is in the public domain. Its use here does not imply endorsement by the USGS or the U.S. Government. Maps in GridReady are models built from this data and may differ from current conditions on the ground.
Doctrine
- TC 3-25.26, Map Reading and Land Navigation, Headquarters, Department of the Army
- FM 21-26, Map Reading and Land Navigation (superseded; cited for teaching material that carried forward)
- GTA 5-2-12, Coordinate Scale and Protractor
Doctrine is cited as the source of the teaching. GridReady is not endorsed by, affiliated with, or an official product of the U.S. Army or the Department of Defense. Training aid only.
Typefaces
Oswald, Barlow, and IBM Plex Mono, used under the SIL Open Font License, served by Google Fonts.