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OSBM Bolt 
OSBM Bolt in rock [3GL]; OSBM BOLT ROCK 6.4M NE DRAIN CUTTING IN LANDSCAPED OLD RD 2.5M NW DRAI.
Location
Grid reference: NH 1136 5368.
Landranger 25: Glen Carron & Glen Affric.
Structure: Rock outcrop.
Waypoint: OS1748.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Achnasheen,
6.56km 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 Dornie to Achnasheen levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NH 1136 5368.
Landranger 25: Glen Carron & Glen Affric.
Structure: Rock outcrop.
Waypoint: OS1748.
Neighbouring Flush Brackets
| G1732 | By Loch Sgamhain 1.59km to the west. |
| G1733 | Loan Bridge 2.84km to the west. |
| G1734 | Glencarron Lodge (A890) 5.62km to the southwest. |
| G1735 | By Allt Dearg 6.96km to the southwest. |
| G1731 | Strath Bran 8.12km 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 Dornie to Achnasheen levelling line. The surveyor's description was OSBM Bolt in rock.
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