**Description****: **OSGM15 Geoid model based on Belfast datum. Suitable for Trimble Access and Survey Controller (>12.41). Once downloaded, unzip the file before use. **File****: **[OSGM15_Belfast.zip][1] [1]: https://hf-files-oregon.s3.amazonaws.com/hdpkorecgroup_kb_attachments/2018/02-06/19496155-8c2b-4b7d-97…
**Description****: **OSGM15 Geoid model based on Malin datum. Suitable for Trimble Access and Survey Controller (>12.41). Once downloaded, unzip the file before use. **File**:[ OSGM15_Malin.zip][1] [1]: https://hf-files-oregon.s3.amazonaws.com/hdpkorecgroup_kb_attachments/2018/02-06/56feb83c-9d41-4f7f-90ed-66c6d…
**Description**: OSGM15 Geoid model based on Newlyn datum. Suitable for Trimble Access and Survey Controller (>12.41). Once downloaded, unzip the file before use. **File**: [osgm15.zip][1] [1]: https://hf-files-oregon.s3.amazonaws.com/hdpkorecgroup_kb_attachments/2018/02-05/fe1d5d9d-41f5-4d0c-965e-ab9e465a87d0/o…