2023

SN2046 : OS Fundamental Benchmark - Llangoedmor, Cardigan FBM

taken 1 year ago, near to Llangoedmor, Ceredigion/Sir Ceredigion, Wales

OS Fundamental Benchmark - Llangoedmor, Cardigan FBM
OS Fundamental Benchmark - Llangoedmor, Cardigan FBM
Ordnance Survey Fundamental Benchmark (FBM) used for levelling height above Ordnance Datum (OD).
Height (1954): 89.4719m OD (Newlyn). Mark verified by the Ordnance Survey in 1972. Description: CARDIGAN FBM 4.3M S SIDE TK 43M SW CORNER GARAGE. 0.3m above ground. 1st Order BM.

The FBM was used on the Haverford West to Cardigan (G077) and Cardigan to Aberystwyth (G082) lines of the Third Geodetic Levelling of England & Wales in 1954 and 1956 respectively. It was levelled with a height of 293.543' above OD (Newlyn). Abstract G 65: LinkExternal link [OS 54/754]

Context: SN2046 : OS Fundamental Benchmark - Llangoedmor, Cardigan FBM

Creative Commons Licence [Some Rights Reserved]   © Copyright N Scott and licensed for reuse under this Creative Commons Licence.
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
+
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
TIP: Click the map for more Large scale mapping
Grid Square
SN2046, 4 images   (more nearby 🔍)
Photographer
N Scott   (more nearby)
Date Taken
Monday, 27 March, 2023   (more nearby)
Submitted
Thursday, 30 March, 2023
Subject Location
OSGB36: geotagged! SN 2089 4602 [10m precision]
WGS84: 52:5.0087N 4:36.9260W
Camera Location
OSGB36: geotagged! SN 2089 4602
View Direction
Southeast (about 135 degrees)
Clickable map
+
NW N NE
W Go E
SW S SE
Image Type (about): close look 
This page has been viewed about 31 times
You are not logged in login | register