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Brecon Fundamental Bench Mark   


Location
Grid reference: SO 0513 2905.
Landranger 160: Brecon Beacons.
Explorer OL12: Brecon Beacons National Park West & Central.
GPS network passive station: H1SO0529.
Waypoint: FM7157.

Neighbouring Flush Brackets
1100 Brecon, Market Tavern 660.30m to the southwest.
915 Brecon, St. Mary's Church 823.29m to the southwest.
1099 Brecon, Watton 952.58m to the south.
1098 Watton, White Horse Inn 1.42km to the southeast.
916 Llanfaes, St. David's Church 1.55km to the southwest.
The nearest fundamental bench mark is Llandovery, 27.86km to the west.

Second Geodetic Levelling, England & Wales (1912-21)
This fundamental bench mark was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 605.1350 feet [184.4451 metres] above mean sea level (Newlyn datum). It was included on the Abergavenny to Brecon, Brecon to Llandovery and Church Stretton to Brecon levelling lines.

Third Geodetic Levelling, England & Wales (1950-68)
This fundamental bench mark was used during the Third geodetic levelling, England & Wales, and was levelled with a height of 605.1350 feet [184.4451 metres] above mean sea level (Newlyn datum). It was included on the Abergavenny to Brecon and Brecon to Llandovery levelling lines.

Logged Visits
Visited on 21st July 2013 by jonglew. Grid reference: SO 05134 29061. Condition: Good.
Didn't find this on first visit 15 Apr 2013 due to not knowing it was buried with top plate flush with ground level. Re-visited on the way home after a weekend's walking in the Brecons. Found it easily, approx 1m SW from end of pedestrian crossing white zig-zag lines on SE side of road, and approx 1m in from edge of carriageway. The FBM is set into the ground, only the "ORDNANCE SURVEY BM" plate is visible.

Visited on 31st August 2012 by Griefmiester. Condition: Good.
Easily located FBM buried flush with the ground - took a bit of digging, find the end of the pedestrain crossing markings and you're there! - appears to be in good condition.

Visited on 7th October 2010 by Dusty. Condition: Good.
Had to uncover this one.

Visited on 16th January 2006 by superswifteagle. Grid reference: SO 0513 2905. Condition: Good.
Marked as being roadside on Cerrigcochion road, Brecon. Couldn't find it, despite searching up & down. Must go back in the light!
26/4/06 - Found it! It's opposite Coleg Powys, just S of the traffic lights, at roadside. It's not a pillar, rather it's flush with the ground so almost hidden by grass.

Visited on 26th January 2005 by Calico. Condition: Good.
If you have any corrections or additions to this record, please let us know.
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