Topographic mapping.
In 1968, the original adjustment was densified in Sarawak and extended to Sabah.
Brunei - onshore and offshore; Malaysia - East Malaysia (Sabah; Sarawak) - onshore and offshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Timbalai 1948", "ellipsoid": { "name": "Everest 1830 (1967 Definition)", "semi_major_axis": 6377298.556, "inverse_flattening": 300.8017 }, "scope": "Topographic mapping.", "area": "Brunei - onshore and offshore; Malaysia - East Malaysia (Sabah; Sarawak) - onshore and offshore.", "bbox": { "south_latitude": 0.85, "west_longitude": 109.31, "north_latitude": 7.67, "east_longitude": 119.61 }, "id": { "authority": "EPSG", "code": 6298 } }