EPSG:3108 — ETRS89 / Guernsey Grid

Projected · Guernsey

Export Formats

OGC WKT

PROJCS[
    "ETRS89 / Guernsey Grid",
    GEOGCS[
        "ETRS89",
        DATUM[
            "European_Terrestrial_Reference_System_1989",
            SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],
            TOWGS84[0,0,0,0,0,0,0],
            AUTHORITY["EPSG","6258"]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4258"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",49.5],
    PARAMETER["central_meridian",-2.41666666666667],
    PARAMETER["scale_factor",0.999997],
    PARAMETER["false_easting",47000],
    PARAMETER["false_northing",50000],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","3108"]
]

WKT2

PROJCRS[
    "ETRS89 / Guernsey Grid",
    BASEGEOGCRS[
        "ETRS89",
        ENSEMBLE[
            "European Terrestrial Reference System 1989 ensemble",
            MEMBER["European Terrestrial Reference Frame 1989",ID["EPSG",1178]],
            MEMBER["European Terrestrial Reference Frame 1990",ID["EPSG",1179]],
            MEMBER["European Terrestrial Reference Frame 1991",ID["EPSG",1180]],
            MEMBER["European Terrestrial Reference Frame 1992",ID["EPSG",1181]],
            MEMBER["European Terrestrial Reference Frame 1993",ID["EPSG",1182]],
            MEMBER["European Terrestrial Reference Frame 1994",ID["EPSG",1183]],
            MEMBER["European Terrestrial Reference Frame 1996",ID["EPSG",1184]],
            MEMBER["European Terrestrial Reference Frame 1997",ID["EPSG",1185]],
            MEMBER["European Terrestrial Reference Frame 2000",ID["EPSG",1186]],
            MEMBER["European Terrestrial Reference Frame 2005",ID["EPSG",1204]],
            MEMBER["European Terrestrial Reference Frame 2014",ID["EPSG",1206]],
            MEMBER["European Terrestrial Reference Frame 2020",ID["EPSG",1382]],
            MEMBER["ETRS89-DNK",ID["EPSG",1412]],
            MEMBER["Estonia 1997",ID["EPSG",6180]],
            MEMBER["Albanian Geodetic Reference Frame 2010",ID["EPSG",1429]],
            MEMBER["ETRS89-ALB [CORS]",ID["EPSG",1430]],
            MEMBER["ETRS89-AUT [2002]",ID["EPSG",1431]],
            MEMBER["Belgian Reference Frame 2002",ID["EPSG",1432]],
            MEMBER["Belgian Reference Frame 2011",ID["EPSG",1447]],
            MEMBER["BH_ETRS89",ID["EPSG",1358]],
            MEMBER["Bulgaria Geodetic System 2005",ID["EPSG",1167]],
            MEMBER["Croatian Terrestrial Reference System 1996",ID["EPSG",6761]],
            MEMBER["AGRS2010 (ETRF2000)",ID["EPSG",1427]],
            MEMBER["CROPOS",ID["EPSG",1445]],
            MEMBER["ETRF2000 Poland",ID["EPSG",1305]],
            MEMBER["ETRS89/DREF91 Realization 2016",ID["EPSG",1353]],
            MEMBER["ETRS89/DREF91 Realization 2025",ID["EPSG",1446]],
            MEMBER["ETRS89-CZE [2007]",ID["EPSG",1433]],
            MEMBER["ETRS89-ESP [REGENTE]",ID["EPSG",1441]],
            MEMBER["ETRS89-ESP [ERGNSS]",ID["EPSG",1442]],
            MEMBER["ETRS89-FRO [2008]",ID["EPSG",1436]],
            MEMBER["ETRS89-GRC [HTRS07]",ID["EPSG",1437]],
            MEMBER["ETRS89-HUN [ETRF2000]",ID["EPSG",1444]],
            MEMBER["ETRS89-IRE [ETRF2000]",ID["EPSG",6173]],
            MEMBER["ETRS89-MKD [EUREF-MAK2010]",ID["EPSG",1438]],
            MEMBER["ETRS89-NOR [EUREF89]",ID["EPSG",1407]],
            MEMBER["ETRS89-PRT [1995]",ID["EPSG",1439]],
            MEMBER["ETRS89-ROU [ETRF2000]",ID["EPSG",1440]],
            MEMBER["ETRS89-SVK [SKTRF09]",ID["EPSG",1434]],
            MEMBER["ETRS89-SVK [SKTRF2022]",ID["EPSG",1435]],
            MEMBER["EUREF-FIN",ID["EPSG",1391]],
            MEMBER["Istituto Geografico Militaire 1995",ID["EPSG",6670]],
            MEMBER["Kosovo Reference System 2001",ID["EPSG",1251]],
            MEMBER["Latvian geodetic coordinate system 1992",ID["EPSG",6661]],
            MEMBER["Latvian coordinate system 2020",ID["EPSG",1356]],
            MEMBER["Lithuania 1994 (ETRS89)",ID["EPSG",6126]],
            MEMBER["MOLDREF99",ID["EPSG",1032]],
            MEMBER["OSNet v2009",ID["EPSG",1425]],
            MEMBER["Reseau Geodesique Francais 1993 v1",ID["EPSG",6171]],
            MEMBER["Reseau Geodesique Francais 1993 v2",ID["EPSG",1312]],
            MEMBER["Reseau Geodesique Francais 1993 v2b",ID["EPSG",1313]],
            MEMBER["Rete Dinamica Nazionale 2008",ID["EPSG",1132]],
            MEMBER["Serbian Reference Network 1998",ID["EPSG",1034]],
            MEMBER["Serbian Spatial Reference System 2000",ID["EPSG",1214]],
            MEMBER["Slovenia Geodetic Datum 1996",ID["EPSG",6765]],
            MEMBER["SWEREF 99",ID["EPSG",6619]],
            MEMBER["Swiss Terrestrial Reference Frame 1995",ID["EPSG",1449]],
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ENSEMBLEACCURACY[0.1],
            ID["EPSG",6258]
        ],
        ID["EPSG",4258]
    ],
    CONVERSION[
        "Guernsey Grid",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            49.5000000000003,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -2.41666666666694,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            0.999997,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            47000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            50000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",19998]
    ],
    CS[Cartesian,2,ID["EPSG",4400]],
    AXIS["Easting (E)",east],
    AXIS["Northing (N)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",3108]
]

PROJ.4

+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:3108", "+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 3108,
  "name": "ETRS89 / Guernsey Grid",
  "kind": "projected",
  "area": "Guernsey",
  "unit": "metre",
  "bbox": [
    49.21,
    -3.06,
    49.94,
    -2.03
  ],
  "proj4": "+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3108, 'EPSG', 3108, '+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["ETRS89 / Guernsey Grid",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49.5],PARAMETER["central_meridian",-2.41666666666667],PARAMETER["scale_factor",0.999997],PARAMETER["false_easting",47000],PARAMETER["false_northing",50000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3108"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=49.5"
  "+lon_0=-2.41666666666667"
  "+k=0.999997"
  "+x_0=47000"
  "+y_0=50000"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

3108=PROJCS["ETRS89 / Guernsey Grid",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49.5],PARAMETER["central_meridian",-2.41666666666667],PARAMETER["scale_factor",0.999997],PARAMETER["false_easting",47000],PARAMETER["false_northing",50000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3108"]]

Related Coordinate Systems (35)

Available Transformations (131)

Transformations inherited from base CRS: EPSG:4258 (ETRS89)

Transformation	Source → Target	Accuracy (m)
DB_REF to ETRS89 (1)	5681 → 4258	0
ETRS89 to OSGB36 / British National Grid (2)	4258 → 27700	0
LUREF to ETRS89 (4)	4181 → 4258	0
LUREF to ETRS89 (3)	4181 → 4258	0
LUREF to ETRS89 (5)	4181 → 4258	0
LUREF to ETRS89 (6)	4181 → 4258	0
LUREF to ETRS89 (7)	4181 → 4258	0
LUREF to ETRS89 (8)	4181 → 4258	0
Amersfoort to ETRS89 (7)	4289 → 4258	0.001
DHDN to ETRS89 (10)	4314 → 4258	0.01

Other CRS using European Terrestrial Reference System 1989 ensemble (52)

Frequently Asked Questions

How do I add EPSG:3108 to GeoServer?

Add the following definition to your GeoServer configuration:

3108=PROJCS["ETRS89 / Guernsey Grid",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49.5],PARAMETER["central_meridian",-2.41666666666667],PARAMETER["scale_factor",0.999997],PARAMETER["false_easting",47000],PARAMETER["false_northing",50000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3108"]]

Read the full GeoServer guide →

How do I add EPSG:3108 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3108, 'EPSG', 3108, '+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["ETRS89 / Guernsey Grid",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49.5],PARAMETER["central_meridian",-2.41666666666667],PARAMETER["scale_factor",0.999997],PARAMETER["false_easting",47000],PARAMETER["false_northing",50000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3108"]]');

Read the full PostGIS guide →

How do I add EPSG:3108 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=49.5"
  "+lon_0=-2.41666666666667"
  "+k=0.999997"
  "+x_0=47000"
  "+y_0=50000"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:3108 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:3108", "+proj=tmerc +lat_0=49.5 +lon_0=-2.41666666666667 +k=0.999997 +x_0=47000 +y_0=50000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →