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OSBM Bolt 
OSBM Bolt on culvert, SW side of road, 4' SW from junction of drain.
Location
Grid reference: ST 3046 4214.
Landranger 182: Weston-super-Mare, Bridgwater & Wells.
Structure: Unknown.
Waypoint: OS0420.
Neighbouring Flush Brackets
The nearest fundamental bench mark is North Petherton,
9.08km to the south.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the North Petherton to Flax Bourton levelling line. The surveyor's description was OSBM Bolt on culvert, SW side of road, 4' SW from junction of drain.
Location
Grid reference: ST 3046 4214.
Landranger 182: Weston-super-Mare, Bridgwater & Wells.
Structure: Unknown.
Waypoint: OS0420.
Neighbouring Flush Brackets
| G2514 | Pawlett, Post Office 768.51m to the northwest. |
| 356 | Dunball Pottery Siding Signal Box 1.31km to the southeast. |
| G2245 | Dunball, Post Office 1.54km to the southeast. |
| 357 | Black Ditch Bridge 1.92km to the northeast. |
| G2247 | Huntspill 2.83km 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 North Petherton to Flax Bourton levelling line. The surveyor's description was OSBM Bolt on culvert, SW side of road, 4' SW from junction of drain.
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