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OSBM Bolt 
OSBM Bolt on concrete block at junction of hedges, S side of road [3GL]; OSBM BOLT CONCRETE BLOCK HEDGE JUNC S SIDE RD.
Location
Grid reference: SM 9692 3738.
Landranger 157: St David's & Haverfordwest.
Structure: Concrete block.
Waypoint: OS0597.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Haverfordwest (1953),
21.49km to the south.
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, S side of road.
Location
Grid reference: SM 9692 3738.
Landranger 157: St David's & Haverfordwest.
Structure: Concrete block.
Waypoint: OS0597.
Neighbouring Flush Brackets
| S7815 | Pont Tre Cynny 540.00m to the east. |
| S0575 | Fishguard, St. Mary's Church 1.18km to the west. |
| S7814 | Garn 2.15km to the east. |
| 11518 | Fishguard Harbour, Tide Gauge Aux 3 2.51km to the west. |
| S7816 | Rafael Fach 2.74km 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 Haverfordwest to Cardigan levelling line. The surveyor's description was OSBM Bolt on concrete block at junction of hedges, S side of road.
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