EPSG:2066 Mount Dillon / Tobago Grid
Projected system (Cassini-Soldner) in use: Trinidad and Tobago - Tobago - onshore. The full definition below, and conversion in one click.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:2066 |
|---|---|
| Name | Mount Dillon / Tobago Grid |
| Type | Projected system — Cassini-Soldner |
| Area of use | Trinidad and Tobago - Tobago - onshore |
| Bounds | W -60,90° · S 11,08° · E -60,44° · N 11,41° |
| Countries | Trinidad & Tobago |
| Datum | Mount Dillon |
| Ellipsoid | Clarke 1858 a = 6378293.645208759 m · 1/f = 294.260676369 |
| Base geographic system | EPSG:4157 — Mount Dillon |
| Unit | Clarke's link (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 11.25217861111111 | degree |
| Longitude of natural origin | -60.686008888888885 | degree |
| False easting | 187500 | Clarke's link |
| False northing | 180000 | Clarke's link |
proj4 definition
+proj=cass +lat_0=11.2521786111111 +lon_0=-60.6860088888889 +x_0=37718.66159325 +y_0=36209.91512952 +a=6378293.64520876 +b=6356617.98767984 +to_meter=0.201166195164 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2066.
WKT (ESRI format, the .prj content)
PROJCS["Mount_Dillon_Tobago_Grid",GEOGCS["GCS_Mount_Dillon",DATUM["D_Mount_Dillon",SPHEROID["Clarke_1858",6378293.64520876,294.260676369261]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Cassini"],PARAMETER["False_Easting",187500.0],PARAMETER["False_Northing",180000.0],PARAMETER["Central_Meridian",-60.6860088888889],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",11.2521786111111],UNIT["Clarke's link",0.201166195164]]Other systems — Trinidad & Tobago
- EPSG:2067Naparima 1955 / UTM zone 20N
- EPSG:2314Trinidad 1903 / Trinidad Grid (ftCla)
- EPSG:4157Mount Dillon
- EPSG:4158Naparima 1955
- EPSG:4271Naparima 1972
- EPSG:4302Trinidad 1903
- EPSG:8035WGS 84 / TM Zone 20N (ftUS)
- EPSG:8036WGS 84 / TM Zone 21N (ftUS)
- EPSG:27120Naparima 1972 / UTM zone 20N
- EPSG:30200Trinidad 1903 / Trinidad Grid
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.