Lairg (1946) Fundamental Bench Mark 

FBM reported destroyed; submerged in 1960s by raising of water level in Loch Shin; replaced by new FBM Lairg (1950).
Location
Grid reference: NC 5733 0729.
Landranger 16: Lairg & Loch Shin, Loch Naver.
Waypoint: FBM008.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Lairg (1950),
364.01m to the north.
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 299.4270 feet [91.2653 metres] above mean sea level (Newlyn datum). It was included on the Lairg to Tain and Ullapool to Lairg levelling lines.
Location
Grid reference: NC 5733 0729.
Landranger 16: Lairg & Loch Shin, Loch Naver.
Waypoint: FBM008.
Neighbouring Flush Brackets
| G1849 | Lairg, Sutherland Arms Hotel 1.34km to the southeast. |
| G1921 | Lairg, Bridge End House 1.46km to the southeast. |
| G1920 | Claonel 2.80km to the south. |
| S7768 | Colaboll ? 3.44km to the northwest. |
| G1850 | Lairg, Station 3.51km to the south. |
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 299.4270 feet [91.2653 metres] above mean sea level (Newlyn datum). It was included on the Lairg to Tain and Ullapool to Lairg levelling lines.
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