Achnasheen Fundamental Bench Mark 

Location
Grid reference: NH 1587 5844.
Landranger 25: Glen Carron & Glen Affric.
GPS network passive station: H1NH1558.
Waypoint: FM0485.
Neighbouring Flush Brackets
| G1731 | Strath Bran 1.76km to the east. |
| G1730 | By Dosmuckeran 4.81km to the northeast. |
| G1729 | Rosebank 7.58km to the east. |
| G1732 | By Loch Sgamhain 8.00km to the southwest. |
| G1733 | Loan Bridge 9.08km to the southwest. |
Second Geodetic Levelling, Scotland (1936-52)
This fundamental bench mark was used during the Second geodetic levelling, Scotland, and was levelled with a height of 517.5511 feet [157.7496 metres] above mean sea level (Newlyn datum). It was included on the Achnasheen to Ullapool, Contin to Achnasheen and Dornie to Achnasheen levelling lines.
Third Geodetic Levelling, Scotland (1956-68)
This fundamental bench mark was used during the Third geodetic levelling, Scotland, and was levelled with a height of 517.5511 feet [157.7496 metres] above mean sea level (Newlyn datum). It was included on the Achnasheen to Contin, Achnasheen to Ullapool and Dornie to Achnasheen levelling lines.
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