Country coordinates

As national coordinates in the are Geodesy the coordinates in a nationwide designated coordinate system.

Within geodesy, the science of measuring and mapping the earth's surface, the Lander survey works out a spatial reference system that clearly defines the position and height of all points. Cartesian coordinate systems that map smaller areas metrically are suitable.

Examples of country coordinates are

• the Gauss-Krüger coordinates ,
• the UTM coordinates and
• the Swiss national coordinates .

The first system was developed by Carl Friedrich Gauß and published by Louis Krüger in 1923. The second, Universal Transverse Mercator (UTM) is a global coordinate system that levels the earth's surface in limited areas with the most favorable Mercator projection . Due to the small area, a single map projection from the Bessel ellipsoid is sufficient for the Swiss national coordinates .