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OSBM Bolt 
OSBM Bolt in rock.
Location
Grid reference: NH 1570 5725.
Landranger 25: Glen Carron & Glen Affric.
Structure: Rock outcrop.
Waypoint: OS1752.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Achnasheen,
1.20km 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 Dornie to Achnasheen levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NH 1570 5725.
Landranger 25: Glen Carron & Glen Affric.
Structure: Rock outcrop.
Waypoint: OS1752.
Neighbouring Flush Brackets
| G1731 | Strath Bran 2.50km to the northeast. |
| G1730 | By Dosmuckeran 5.52km to the northeast. |
| G1732 | By Loch Sgamhain 7.13km to the southwest. |
| G1729 | Rosebank 8.22km to the northeast. |
| G1733 | Loan Bridge 8.27km 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 Dornie to Achnasheen levelling line. The surveyor's description was OSBM Bolt in rock.
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