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OSBM Bolt 
OSBM Bolt in rock [3GL].
Location
Grid reference: NC 1809 3860.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1850.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Laxford Bridge,
9.81km to the northeast.
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Ledmore to Laxford Bridge levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NC 1809 3860.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1850.
Neighbouring Flush Brackets
| G1926 | Kylestrome 5.75km to the southeast. |
| G1822 | Eilean na Rainich 6.48km to the southeast. |
| G1823 | Kylesku Hotel 6.85km to the southeast. |
| 12126 | Drumbeg Hotel 8.33km to the southwest. |
| S7855 | Coire nan Laogh 9.88km to the northeast. |
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Ledmore to Laxford Bridge levelling line. The surveyor's description was OSBM Bolt in rock.
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