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OSBM Bolt 
OSBM Bolt in rock [3GL] - possibly abandoned when road rerouted.
Location
Grid reference: NC 1937 3803.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1849.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Laxford Bridge,
9.67km 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 1937 3803.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1849.
Neighbouring Flush Brackets
| G1926 | Kylestrome 4.49km to the southeast. |
| G1822 | Eilean na Rainich 5.17km to the southeast. |
| G1823 | Kylesku Hotel 5.55km to the southeast. |
| 12126 | Drumbeg Hotel 8.94km to the southwest. |
| S7855 | Coire nan Laogh 9.15km 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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