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OSBM Bolt: Gurnard Transfer Bolt 
Gurnard Transfer Bolt on concrete block 49' E from NE angle of hut 'Why Not' [3GL] - reported destroyed.
Location
Grid reference: SZ 4698 9528.
Landranger 196: The Solent & The Isle of Wight, Southampton & Portsmouth.
Structure: Concrete block.
Waypoint: OS0076.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Calbourne,
9.77km 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 Gurnard (IOW) to Freshwater (IOW) and Totton to Calbourne (IOW) levelling lines. The surveyor's description was Gurnard Transfer Bolt on concrete block 49' E from NE angle of hut 'Why Not'.
Location
Grid reference: SZ 4698 9528.
Landranger 196: The Solent & The Isle of Wight, Southampton & Portsmouth.
Structure: Concrete block.
Waypoint: OS0076.
Neighbouring Flush Brackets
| G4022 | Avenue Cottage 641.95m to the south. |
| G4421 | Gurnard 1.04km to the east. |
| G4023 | Hillis Farm 2.03km to the south. |
| G4422 | Cowes 2.35km to the east. |
| G4302 | Thorness Cottage 3.08km 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 Gurnard (IOW) to Freshwater (IOW) and Totton to Calbourne (IOW) levelling lines. The surveyor's description was Gurnard Transfer Bolt on concrete block 49' E from NE angle of hut 'Why Not'.
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