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OSBM Bolt 
OSBM Bolt on top of living rock in hedge, 127' SW of junction of hedges, on NW side of road [3GL].
Location
Grid reference: SX 8230 8641.
Landranger 191: Okehampton & North Dartmoor.
Structure: Rock outcrop.
Waypoint: OS0376.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Bridford,
1.11km 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 Beer to Bridford and Bridford to Dulverton levelling lines. The surveyor's description was OSBM Bolt on top of living rock in hedge, 127' SW of junction of hedges, on NW side of road.
Location
Grid reference: SX 8230 8641.
Landranger 191: Okehampton & North Dartmoor.
Structure: Rock outcrop.
Waypoint: OS0376.
Neighbouring Flush Brackets
| 1914 | Birchtree Farm 920.87m to the north. |
| G2196 | Bridfordmills 1.31km to the northeast. |
| 2017 | Bridford Bridge 1.38km to the northeast. |
| 1913 | Weeke Barton 1.50km to the north. |
| 1912 | Sowton Cott Bridge 2.00km to the north. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Beer to Bridford and Bridford to Dulverton levelling lines. The surveyor's description was OSBM Bolt on top of living rock in hedge, 127' SW of junction of hedges, on NW side of road.
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