Transverse Mercator projection
（重定向自Universal transverse Mercator projection）
![A transverse Mercator projection](/Images/godic/202502/18/Usgs_map_traverse_mercator0504.PNG")
![Spherical Normal (equatorial) Mercator (truncated at y = ±π, corresponding to approximately 85 degrees).](/Images/godic/202502/18/MercNormSph0504.png")
![Spherical transverse Mercator (truncated at x = ±π in units of Earth radius.)](/Images/godic/202502/18/MercTranSph0504.png")
![Ellipsoidal Transverse Mercator: a finite projection.](/Images/godic/202502/18/MercTranEll0504.png")
The transverse Mercator map projection is an adaptation of the standard Mercator projection. The transverse version is widely used in national and international mapping systems around the world, including the UTM. When paired with a suitable geodetic datum, the transverse Mercator delivers high accuracy in zones less than a few degrees in east-west extent.