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OSBM Bolt: Brownrigg 
OSBM Bolt on living rock, 20' NW from NW side of road, 136' SW from junction of roads, Brownrigg.
Location
Grid reference: NY 3041 4056.
Landranger 85: Carlisle & Solway Firth, Gretna Green.
Structure: Other.
Waypoint: OS0024.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Cockermouth,
17.66km 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 Cockermouth to Wetheral levelling line. The surveyor's description was OSBM Bolt on living rock, 20' NW from NW side of road, 136' SW from junction of roads, Brownrigg.
Location
Grid reference: NY 3041 4056.
Landranger 85: Carlisle & Solway Firth, Gretna Green.
Structure: Other.
Waypoint: OS0024.
Neighbouring Flush Brackets
| S8261 | Croft House 2.13km to the north. |
| S8260 | Thistlebottom 2.17km to the southwest. |
| S8293 | Wyndham Farm 2.64km to the north. |
| S8294 | Wallace Lane 3.26km to the northwest. |
| S8259 | B5299 3.53km 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 on living rock, 20' NW from NW side of road, 136' SW from junction of roads, Brownrigg.
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