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OSBM Bolt 
OSBM Bolt in rock [3GL]; OSBM BOLT ROCK 11.0M N N SIDE RD.
Location
Grid reference: NH 1836 5920.
Landranger 25: Glen Carron & Glen Affric.
Structure: Rock outcrop.
Waypoint: OS1987.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Achnasheen,
2.60km to the west.
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Achnasheen to Contin levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NH 1836 5920.
Landranger 25: Glen Carron & Glen Affric.
Structure: Rock outcrop.
Waypoint: OS1987.
Neighbouring Flush Brackets
| G1731 | Strath Bran 841.55m to the west. |
| G1730 | By Dosmuckeran 2.23km to the northeast. |
| G1729 | Rosebank 4.98km to the northeast. |
| G1728 | Achanalt Hotel 8.03km to the east. |
| G1727 | Viaduct Plantation 9.62km to the east. |
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Achnasheen to Contin levelling line. The surveyor's description was OSBM Bolt in rock.
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