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OSBM Bolt 
OSBM Bolt on culvert, E side of road A129, 11' S & 19' W from junction of fences.
Location
Grid reference: TQ 7996 8879.
Landranger 178: Thames Estuary, Rochester & Southend-on-Sea.
Structure: Other.
Waypoint: OS0108.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Hatfield Peverel,
23.07km 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 Hatfield Peverel to Snodland levelling line. The surveyor's description was OSBM Bolt on culvert, E side of road A129, 11' S & 19' W from junction of fences.
Location
Grid reference: TQ 7996 8879.
Landranger 178: Thames Estuary, Rochester & Southend-on-Sea.
Structure: Other.
Waypoint: OS0108.
Neighbouring Flush Brackets
| G1670 | Thundersley 67.08m to the northeast. |
| S0975 | Hadleigh 1.34km to the south. |
| G2431 | Thundersley 1.45km to the southwest. |
| S1032 | Rayleigh 1.82km to the north. |
| S0976 | Hadleigh 2.04km to the southeast. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Hatfield Peverel to Snodland levelling line. The surveyor's description was OSBM Bolt on culvert, E side of road A129, 11' S & 19' W from junction of fences.
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