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OSBM Bolt 
OSBM Bolt on concrete block, 3' W from angle of hedge, N side of road.
Location
Grid reference: SN 3520 1936.
Landranger 159: Swansea & Gower, Carmarthen.
Structure: Concrete block.
Waypoint: OS0578.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Carmarthen,
9.31km 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 Carmarthen to Haverfordwest levelling line. The surveyor's description was OSBM Bolt on concrete block, 3' W from angle of hedge, N side of road.
Location
Grid reference: SN 3520 1936.
Landranger 159: Swansea & Gower, Carmarthen.
Structure: Concrete block.
Waypoint: OS0578.
Neighbouring Flush Brackets
| S7953 | Llethrach Chapel 228.04m to the southwest. |
| S7954 | Grandstand 840.24m to the east. |
| S7952 | Sarnau 1.45km to the southwest. |
| S7955 | Travellers' Rest 3.04km to the east. |
| S0632 | Bancyfelin 3.10km to the southwest. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Carmarthen to Haverfordwest levelling line. The surveyor's description was OSBM Bolt on concrete block, 3' W from angle of hedge, N side of road.
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