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OSBM Bolt 
OSBM Bolt on living rock.
Location
Grid reference: NT 4799 2596.
Landranger 73: Peebles, Galashiels & Selkirk, Tweed Valley.
Structure: Rock outcrop.
Waypoint: OS1350.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Hawick,
13.52km to the south.
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Innerleithen to Hawick levelling line. The surveyor's description was OSBM Bolt on living rock.
Location
Grid reference: NT 4799 2596.
Landranger 73: Peebles, Galashiels & Selkirk, Tweed Valley.
Structure: Rock outcrop.
Waypoint: OS1350.
Neighbouring Flush Brackets
| G370 | South Common 1.50km to the north. |
| G371 | Dryden 2.66km to the south. |
| G369 | Selkirk, Maket Place 2.71km to the northwest. |
| G368 | Philiphaugh 3.39km to the northwest. |
| G367 | Linglie 3.73km to the north. |
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Innerleithen to Hawick levelling line. The surveyor's description was OSBM Bolt on living rock.
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