guest [
OSBM Bolt 
OSBM Bolt in rock [3GL] - presumably replaced in 1978 by new Bolt nearby.
Location
Grid reference: NC 2518 1828.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1833.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Ledmore,
4.85km 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 Ledmore to Laxford Bridge levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NC 2518 1828.
Landranger 15: Loch Assynt, Lochinver & Kylesku.
Structure: Rock outcrop.
Waypoint: OS1833.
Neighbouring Flush Brackets
| G1809 | Inchnadamph Hotel 3.35km to the north. |
| G1881 | Ledmore 6.16km to the south. |
| G1880 | Elphin School 7.21km to the southwest. |
| G4385 | Altnacealgach Hotel 7.58km to the south. |
| G1882 | Altnacealgach Hotel 7.60km 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 Ledmore to Laxford Bridge levelling line. The surveyor's description was OSBM Bolt in rock.
If you have any corrections or additions to this record, please let us know.