OSBM Bolt 

N end of W parapet of bridge, 58' N of gatepost.
Location
Grid reference: SR 9755 9638.
Landranger 158: Tenby & Pembroke.
Structure: Unknown.
Waypoint: OS0918.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Haverfordwest (1969),
19.38km 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 Carmarthen levelling line. The surveyor's description was N end of W parapet of bridge, 58' N of gatepost.
Location
Grid reference: SR 9755 9638.
Landranger 158: Tenby & Pembroke.
Structure: Unknown.
Waypoint: OS0918.
Neighbouring Flush Brackets
| G5109 | Stackpole 894.54m to the east. |
| G5108 | Sampson Farm 903.55m to the west. |
| G5107 | Loveston Farm 2.81km to the west. |
| G5110 | East Trewent 3.51km to the east. |
| S7943 | Pembroke, Eastgate School 5.05km 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 Carmarthen levelling line. The surveyor's description was N end of W parapet of bridge, 58' N of gatepost.
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