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OSBM Bolt: Dockray Hall 
OSBM Bolt in concrete block, 11' SW from junction of wall & hedge, NW side of road.
Location
Grid reference: NY 2751 4965.
Landranger 85: Carlisle & Solway Firth, Gretna Green.
Structure: Concrete block.
Waypoint: OS0028.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Wetheral,
18.91km 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 Cockermouth to Wetheral levelling line. The surveyor's description was OSBM Bolt in concrete block, 11' SW from junction of wall & hedge, NW side of road.
Location
Grid reference: NY 2751 4965.
Landranger 85: Carlisle & Solway Firth, Gretna Green.
Structure: Concrete block.
Waypoint: OS0028.
Neighbouring Flush Brackets
| S8300 | Micklethwaite 1.15km to the northeast. |
| S8299 | Wigton 1.95km to the southwest. |
| S8301 | Shaw Rigg 2.35km to the northeast. |
| S0204 | Wigton 2.38km to the southwest. |
| S8298 | Brackenlands 2.92km 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 Cockermouth to Wetheral levelling line. The surveyor's description was OSBM Bolt in concrete block, 11' SW from junction of wall & hedge, NW side of road.
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