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OSBM Bolt 
OSBM Bolt on concrete block at junction of hedges, N side of road [3GL].
Location
Grid reference: SN 0642 3907.
Landranger 145: Cardigan & Mynydd Preseli.
Structure: Concrete block.
Waypoint: OS0601.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Cardigan,
16.05km 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, N side of road.
Location
Grid reference: SN 0642 3907.
Landranger 145: Cardigan & Mynydd Preseli.
Structure: Concrete block.
Waypoint: OS0601.
Neighbouring Flush Brackets
| S0565 | Newport, St. Mary's Church 656.20m to the west. |
| S7810 | by Pont Clydach 680.29m to the east. |
| S7809 | Temple Bar 1.99km to the east. |
| S7811 | Holm House Uchaf 2.35km to the west. |
| S7808 | Farchog, Capel Cana 3.63km 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 at junction of hedges, N side of road.
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