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OSBM Bolt 
OSBM Bolt in rock.
Location
Grid reference: ND 0874 2073.
Landranger 17: Helmsdale & Strath of Kildonan.
Structure: Rock outcrop.
Waypoint: OS1948.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Helmsdale,
7.18km 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 Lybster to Helmsdale levelling line. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: ND 0874 2073.
Landranger 17: Helmsdale & Strath of Kildonan.
Structure: Rock outcrop.
Waypoint: OS1948.
Neighbouring Flush Brackets
| G2097 | Ousdale School 1.33km to the west. |
| G2096 | Berriedale, Ivy Cottage 3.67km to the northeast. |
| G2095 | Borgie, Sunnybrae 4.36km to the northeast. |
| G2094 | Newport, Borgue Old School 5.93km to the northeast. |
| G2093 | Rhian Cottage (A9) 6.89km 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 Lybster to Helmsdale levelling line. The surveyor's description was OSBM Bolt in rock.
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