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OSBM Bolt 
OSBM Bolt on concrete block, SE side of road on production of hedge opposite.
Location
Grid reference: SN 1793 4509.
Landranger 145: Cardigan & Mynydd Preseli.
Structure: Concrete block.
Waypoint: OS0618.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Cardigan,
3.10km to the east.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Haverfordwest to Cardigan levelling line. The surveyor's description was OSBM Bolt on concrete block, SE side of road on production of hedge opposite.
Location
Grid reference: SN 1793 4509.
Landranger 145: Cardigan & Mynydd Preseli.
Structure: Concrete block.
Waypoint: OS0618.
Neighbouring Flush Brackets
| S7801 | Parc-y-prat 735.73m to the southwest. |
| S0557 | Cardigan, St Marys Old School Hall 1.01km to the north. |
| S0558 | Cardigan, Town Hall 1.10km to the north. |
| S7802 | Pantygrwndy 2.08km to the southwest. |
| S7800 | Llangoedmor 2.15km to the east. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Haverfordwest to Cardigan levelling line. The surveyor's description was OSBM Bolt on concrete block, SE side of road on production of hedge opposite.
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