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OSBM Bolt 
OSBM Bolt on concrete block at junction of hedges, SE side of road [3GL].
Location
Grid reference: SN 1482 3903.
Landranger 145: Cardigan & Mynydd Preseli.
Structure: Concrete block.
Waypoint: OS0607.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Cardigan,
9.26km to the northeast.
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 at junction of hedges, SE side of road.
Location
Grid reference: SN 1482 3903.
Landranger 145: Cardigan & Mynydd Preseli.
Structure: Concrete block.
Waypoint: OS0607.
Neighbouring Flush Brackets
| S7804 | Traws 728.35m to the northeast. |
| S7805 | Eglwyswrw 860.52m to the southwest. |
| S7806 | Henllan 2.75km to the west. |
| S7803 | Llantood 2.99km to the north. |
| S0563 | Crossway 4.03km to the north. |
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 at junction of hedges, SE side of road.
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