EPSG systems

EPSG:29874 Timbalai 1948 / RSO Sarawak LSD (m)

Projected system (Hotine Oblique Mercator (variant A)) in use: Malaysia - East Malaysia - Sarawak onshore. The full definition below, and conversion in one click.

System record
CodeEPSG:29874
NameTimbalai 1948 / RSO Sarawak LSD (m)
TypeProjected system — Hotine Oblique Mercator (variant A)
Area of use Malaysia - East Malaysia - Sarawak onshore
Bounds W 109,54° · S 0,85° · E 115,69° · N 5,03°
Countries Malaysia
DatumTimbalai 1948
Ellipsoid Everest 1830 (1967 Definition) a = 6377298.556 m · 1/f = 300.8017
Base geographic system EPSG:4298 — Timbalai 1948
Unit metre (E east, N north)
Transformation to WGS 84 Timbalai 1948 to WGS 84 (1) (EPSG:1228) — accuracy 19 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of projection centre4degree
Longitude of projection centre115degree
Azimuth at projection centre53.31582047222222degree
Angle from Rectified to Skew Grid53.13010236111111degree
Scale factor at projection centre0.99984unity
False easting2000000metre
False northing5000000metre

proj4 definition

+proj=omerc +no_uoff +lat_0=4 +lonc=115 +alpha=53.3158204722222 +gamma=53.1301023611111 +k=0.99984 +x_0=2000000 +y_0=5000000 +ellps=evrstSS +units=m +towgs84=-679,669,-48 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:29874.

WKT (ESRI format, the .prj content)

PROJCS["Timbalai_1948_RSO_Sarawak_LSD_(m)",GEOGCS["GCS_Timbalai_1948",DATUM["D_Timbalai_1948",SPHEROID["Everest_Definition_1967",6377298.556,300.8017]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Rectified_Skew_Orthomorphic_Natural_Origin"],PARAMETER["False_Easting",2000000.0],PARAMETER["False_Northing",5000000.0],PARAMETER["Scale_Factor",0.99984],PARAMETER["Azimuth",53.3158204722222],PARAMETER["Longitude_Of_Center",115.0],PARAMETER["Latitude_Of_Center",4.0],PARAMETER["XY_Plane_Rotation",53.1301023611111],UNIT["Meter",1.0]]

All systems — Malaysia

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.