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OSBM Bolt 
OSBM Bolt in quarry, N side of road, 70' N of fence.
Location
Grid reference: SS 8126 4781.
Landranger 181: Minehead & Brendon Hills, Dulverton & Tiverton.
Structure: Unknown.
Waypoint: OS0852.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Countisbury,
6.26km 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 Countisbury to North Petherton levelling line. The surveyor's description was OSBM Bolt in quarry, N side of road, 70' N of fence.
Location
Grid reference: SS 8126 4781.
Landranger 181: Minehead & Brendon Hills, Dulverton & Tiverton.
Structure: Unknown.
Waypoint: OS0852.
Neighbouring Flush Brackets
| G4817 | Metcombe Plantation 1.94km to the east. |
| G4802 | Wellfield Cottage 3.96km to the west. |
| S2818 | Porlock, School 7.25km to the east. |
| S2816 | Porlock, Reading Room 7.45km to the east. |
| G4818 | New Bridge 8.80km 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 Countisbury to North Petherton levelling line. The surveyor's description was OSBM Bolt in quarry, N side of road, 70' N of fence.
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