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OSBM Bolt 
OSBM Bolt in rock [3GL].
Location
Grid reference: NC 1476 0068.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1816.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Ullapool,
5.98km to the southwest.
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Ullapool to Ledmore levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NC 1476 0068.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1816.
Neighbouring Flush Brackets
| G1873 | River Kanaird Bridge 674.46m to the north. |
| 11770 | By Meall Mòr 687.97m to the southwest. |
| G1876 | Strathcanaird 1.38km to the north. |
| 11925 | Glutton 2.57km to the southwest. |
| G1877 | Drumrunie Lodge 3.78km 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 Ullapool to Ledmore levelling line. The surveyor's description was OSBM Bolt in rock.
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