User:  guest [login]

Machynlleth Fundamental Bench Mark   

Grid reference: SH 7553 0052.
Landranger 135: Aberystwyth & Machynlleth.
Explorer OL23: Cadair Idris & Bala Lake / Llyn Tegid.
Explorer 215: Newtown & Machynlleth.
GPS network passive station: H1SH7500.
Waypoint: FM0521.

Neighbouring Flush Brackets
S0349 Machynlleth 809.94m to the west.
G2567 Pen-y-bont 1.81km to the northwest.
G2178 Penegoes 2.29km to the east.
G2568 Dol-y-Dderwen 2.54km to the north.
G2012 Derwenlas 3.57km to the southwest.
The nearest fundamental bench mark is Aberystwyth, 27.54km to the southwest.

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 112.8472 feet [34.3958 metres] above mean sea level (Newlyn datum). It was included on the Aberystwyth to Machynlleth, Machynlleth to Newtown and Machynlleth to Trawsfynydd levelling lines.

Logged Visits
Visited on 5th November 2016 by jonglew. Grid reference: SH 75532 00526. Condition: Good.
Good parking adjacent. In playpen. Height tag missing. Photos at:

Visited on 9th October 2016 by Father Ted. Condition: Good.
Still in good condition sitting inside its tidy green metal fence.

Visited on 9th June 2016 by Orlandos_Rat. Grid reference: SH 7553 0052. Condition: Good.
Nice easy find with the FBM still in a playpen.

Visited on 3rd April 2015 by mickandkim. Grid reference: SH 7553 0052. Condition: Good.
In good order

Visited on 14th June 2014 by pkbathrooms. Grid reference: SH 7553 0052. Condition: Good.
nice find as it is located in play also a trig point pen

Visited on 14th June 2014 by Dusty. Condition: Good.
In 'Play-Pen'.

Visited on 25th May 2013 by wrose. Grid reference: SH 75533 00521. Condition: Good.
At the described location. Nothing really to add to previous visit reports other than to confirm that it is still there, protected by railings and in good condition.

Visited on 15th April 2011 by Griefmiester. Condition: Good.
Standard playpen - great views

Visited on 28th June 2009 by Meirion. Condition: Good.
A nice spot for a picnic!

Visited on 24th September 2005 by superswifteagle. Grid reference: SH 755 005. Condition: Good.
Set within railings

Visited on 29th December 2003 by Calico. Condition: Good.
If you have any corrections or additions to this record, please let us know.