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OSBM Bolt 
OSBM Bolt on concrete culvert, SW side of road at junction of fences [destroyed].
Location
Grid reference: TF 4531 9081.
Landranger 113: Grimsby, Louth & Market Rasen.
Structure: Other.
Waypoint: OS0096.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Patrington,
34.54km to the northwest.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Boston to Immingham levelling line. The surveyor's description was OSBM Bolt on concrete culvert, SW side of road at junction of fences [destroyed].
Location
Grid reference: TF 4531 9081.
Landranger 113: Grimsby, Louth & Market Rasen.
Structure: Other.
Waypoint: OS0096.
Neighbouring Flush Brackets
| S0605 | Saltfleetby, Prussian Queen PH 78.10m to the northwest. |
| S0606 | Theddlethorpe St Helen 2.53km to the southeast. |
| S0604 | Saltfleet 3.08km to the north. |
| G4695 | Skidbrook North End 4.65km to the north. |
| G4694 | The Hollies 4.84km 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 Boston to Immingham levelling line. The surveyor's description was OSBM Bolt on concrete culvert, SW side of road at junction of fences [destroyed].
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