History of Datum Plates and Markers
| Element | Description | Element Code | Essential | Uniclass 2015 | Updates |
|---|---|---|---|---|---|
| Datum Plates and Markers | A temporary or permanent fixing which a point of known elevation marked for the purpose of surveying. | DTM | No | Pr_40_10_77_20 | 05-09-2022 |
| Datum Plates and Markers | A temporary or permanent fixing which a point of known elevation marked for the purpose of surveying. Only Datum Plates and Markers that are maintained by the Environment Agency or are of benefit to the Environment Agency should be recorded. | DTM | No | Pr_40_10_77_20 | 11-04-2023 |