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Thornford Fundamental Bench Mark   


Location
Grid reference: ST 5953 1270.
Landranger 194: Dorchester & Weymouth, Cerne Abbas & Bere Regis.
Explorer 129: Yeovil & Sherborne.
GPS network passive station: H1ST5912.
Waypoint: FM0536.

Neighbouring Flush Brackets
265 Thornford, Railway Station Bridge 238.54m to the southwest.
232 Beer Hacket 904.43m to the south.
233 Clifton Farm Railway Bridge 1.08km to the northwest.
G3907 Thornford 1.43km to the northeast.
10809 Bradford Abbas, School 1.77km to the northwest.
The nearest fundamental bench mark is Dorchester, 24.39km to the southeast.

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 163.7100 feet [49.8988 metres] above mean sea level (Newlyn datum). It was included on the Thornford to Dorchester and Thornford to North Petherton 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 163.7100 feet [49.8988 metres] above mean sea level (Newlyn datum). It was included on the Dorchester to Thornford and Upton Lovell to Thornford levelling lines.

Logged Visits
Visited on 28th April 2016 by Dusty. Condition: Good.

Visited on 29th March 2015 by jonglew. Grid reference: ST 59537 12702. Condition: Good.
In grass verge at side of recently laid tarmac FP. Top surface only visible, so dug out a little to raise its profile. Height tag missing. Photo at:
http://www.jonglew.com/Walking/TrigPoints/2015/20150329-ThornfordDorsetFBM2.jpg

Visited on 25th January 2015 by Ruvaal. Condition: Slightly damaged.
Very poor condition, and easily found. I guess it suffers from the mowing machine.

Visited on 25th January 2015 by Skerryvore. Grid reference: ST 59534 12697. Condition: Slightly damaged.
Found quite easily with coords from trigpointing UK. Shame it's not protected like some others.

Visited on 2nd March 2013 by bikeboyz. Condition: Probably destroyed.
Thornford FBM has been removed or completely buried. Evidence of pavement widening, where it looks like the path foundation was dug out and lined with timber boards before being filled with foundation and tarmac. GPS placed me in the right place, and with the TUK app photos the pillar was not found. I fear this has been destroyed. The ditch was dry so I got down in to it and looked for evidence, there were several uncut large natural stones, and further up one which was certainly man cut. None in granite though. I'm not sure about the ditch's relationship in depth to the underground chamber though there was no evidence of penetration. http://youtu.be/bglJdoEgTEQ for a scene clip.
If you have any corrections or additions to this record, please let us know.
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