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OSBM Bolt 
OSBM Bolt on top of cattle tunnel, SW side of road.
Location
Grid reference: SZ 3699 8531.
Landranger 196: The Solent & The Isle of Wight, Southampton & Portsmouth.
Structure: Other.
Waypoint: OS0089.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Freshwater,
3.28km to the west.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Gurnard (IOW) to Freshwater (IOW) levelling line. The surveyor's description was OSBM Bolt on top of cattle tunnel, SW side of road.
Location
Grid reference: SZ 3699 8531.
Landranger 196: The Solent & The Isle of Wight, Southampton & Portsmouth.
Structure: Other.
Waypoint: OS0089.
Neighbouring Flush Brackets
| G4417 | Tapnell Cottages 1.09km to the north. |
| G4416 | Afton Toll Gate 1.82km to the northwest. |
| G4418 | Smallholding Cottage 2.05km to the east. |
| S0595 | Freshwater, Water Works 2.26km to the west. |
| G4419 | Brook Cottages 2.80km 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 Gurnard (IOW) to Freshwater (IOW) levelling line. The surveyor's description was OSBM Bolt on top of cattle tunnel, SW side of road.
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