Let's look at the Easting of a point that is 146m east of the western grid line. Using a map ruler to plot/measure a UTM position with 10m precision The precision of the Easting and Northing measurementsĪ UTM coordinate's Easting and Northing are both distance measurements made in meters.īut this leaves us with a dilemma when we have not measured with one meter precision. Using various tools to plot and measure UTM positions on a map The last 3 digits are the distance in meters measured from the southern grid line. Using a map with a 1000m grid, the first digits are come from the label for the grid line to the south of the position. Measurement of North-South position, within the Grid Zone, in meters. The bottom set of numbers, 4344683, represent a The last 3 digits are the distance in meters measured from the western grid line. Using a map with a 1000m grid, the first digits are come from the label for the grid line to the west of the position. Measurement of East-West position, within the Grid Zone, in meters. The top set of numbers, 706832, represent a Necessary to make the coordinates unique over the entire globe. The 10S is the Grid Zone Designation you are in. The two grid lines are 1000 meters apart. , reads "seven hundred and six thousand meters East." The label,
Look along the bottom edge of the map at the labels for the vertical grid lines. The vertical grid lines determine East-West position and the horizontal grid lines determine North-South The grid is labeled with UTM coordinate values. The map has grid lines spaced every kilometer or 1000 meters. Set to display position in UTM/UPS format, would report a location of: Let's look at where the various parts of the UTM position come from on the map. * See ChangeLog for information on the currently implemented releases of NADCON and VERTCON.Standing at the center of the marker shown on the map below, a GPS unit Orthometric Height Height Transformations (VERTCON).Latitude,Longitude,and Ellipsoid Height Transformations (NADCON).State Plane Coordinates, NAD 27 (GPPCGP 2.0).State Plane Coordinates, NAD 83 (SPC83 2.1).Universal Transverse Mercator Coordinates (UTMS 2.1).NCAT incorporates the capabilities of the following NGS computer programs, which originally were stand-alone products: Only orthometric-to-orthometric and ellipsoidal-to-ellipsoidal height transformations are currently possible in NCAT. Please note that, although either orthometric or ellipsoidal heights can be used as inputs to NCAT, at this time NCAT does not convert between orthometric and ellipsoidal heights. NADCON and VERTCON provide local error estimates for each transformation, and do not support transformations which are outside the boundaries of the supported areas (generally, CONUS, Alaska, Hawaii, Puerto Rico and the US Virgin Islands, American Samoa, and Guam and Northern Mariana Islands). Transformations are provided for a wide range of frames/datums and regions in the National Spatial Reference System. NCAT currently uses NADCON* to perform three-dimensional (latitude, longitude, ellipsoid height) coordinate transformations and VERTCON* to perform orthometric height transformations. For coordinate conversion, NCAT allows conversion between lat/long/height, SPC, UTM, XYZ, and USNG systems. NGS Coordinate Conversion and Transformation Tool (NCAT) allows users to easily convert between different coordinate systems and/or transform between different reference frames and/or datums, in a single step.
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