EPSG:CODE

ESRI:112020 OSGB36 National Highways A12H1

Projected · UK - Highways England - A12

Export Formats

OGC WKT
PROJCS[
    "OSGB36_National_Highways_A12H1",
    GEOGCS[
        "GCS_OSGB_1936",
        DATUM["D_OSGB_1936",SPHEROID["Airy_1830",6377563.396,299.3249646]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",144031.0383232799],
    PARAMETER["False_Northing",71015.30361772828],
    PARAMETER["Central_Meridian",-2.0],
    PARAMETER["Scale_Factor",0.9998167296682084],
    PARAMETER["Latitude_Of_Origin",49.0],
    UNIT["Meter",1.0]
]

Frequently Asked Questions

How do I add ESRI:112020 to GeoServer?

Add the following definition to your GeoServer configuration:

112020=PROJCS["OSGB36_National_Highways_A12H1",GEOGCS["GCS_OSGB_1936",DATUM["D_OSGB_1936",SPHEROID["Airy_1830",6377563.396,299.3249646]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",144031.0383232799],PARAMETER["False_Northing",71015.30361772828],PARAMETER["Central_Meridian",-2.0],PARAMETER["Scale_Factor",0.9998167296682084],PARAMETER["Latitude_Of_Origin",49.0],UNIT["Meter",1.0]]
Read the full GeoServer guide →

How do I add ESRI:112020 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (112020, 'ESRI', 112020, '+proj=tmerc +datum=OSGB36 +x_0=144031.0383232799 +y_0=71015.30361772828 +lon_0=2dW +lat_0=49dN +k_0=0.9998167296682084 +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs', 'PROJCS["OSGB36_National_Highways_A12H1",GEOGCS["GCS_OSGB_1936",DATUM["D_OSGB_1936",SPHEROID["Airy_1830",6377563.396,299.3249646]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",144031.0383232799],PARAMETER["False_Northing",71015.30361772828],PARAMETER["Central_Meridian",-2.0],PARAMETER["Scale_Factor",0.9998167296682084],PARAMETER["Latitude_Of_Origin",49.0],UNIT["Meter",1.0]]');
Read the full PostGIS guide →

How do I add ESRI:112020 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+datum=OSGB36"
  "+x_0=144031.0383232799"
  "+y_0=71015.30361772828"
  "+lon_0=2dW"
  "+lat_0=49dN"
  "+k_0=0.9998167296682084"
  "+nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb"
  "+no_defs"
END
Read the full MapServer guide →

How do I use ESRI:112020 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("ESRI:112020", "+proj=tmerc +datum=OSGB36 +x_0=144031.0383232799 +y_0=71015.30361772828 +lon_0=2dW +lat_0=49dN +k_0=0.9998167296682084 +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs");
Read the full Proj4js guide →