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Navenby Fundamental Bench Mark   


Location
Grid reference: TF 01600 59280.
Landranger 121: Lincoln & Newark-on-Trent.
Explorer 272: Lincoln.
GPS network passive station: H1TF0159.
Waypoint: FM7168.

Neighbouring Flush Brackets
2142 Green Man Farm 152.79m to the southeast.
2235 by Green Man Wood 635.69m to the north.
G4172 Heath Farm 1.36km to the northeast.
G1470 Temple High Grange Farm 2.03km to the southeast.
2094 Navenby 3.11km to the southwest.
The nearest fundamental bench mark is Waltham on the Wolds, 39.60km to the southwest.

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 157.3450 feet [47.9588 metres] above mean sea level (Newlyn datum). It was included on the Navenby to Hibaldstow and Waltham on the Wolds to Navenby 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 157.3450 feet [47.9588 metres] above mean sea level (Newlyn datum). It was included on the Hibaldstow to Navenby, Navenby to Castor and Thornham to Navenby levelling lines.

Logged Visits
Visited on 24th September 2016 by Orlandos_Rat. Grid reference: TF 01600 59280. Condition: Good.
I spotted this one on my car's satnav and stopped to look for it. But it took a while and, to me, it looked like it was a melted FBM as I could see the top and the side in one view.

Interested to hear what others have to say about it.

Visited on 8th May 2014 by Calico. Condition: Good.

Visited on 29th May 2006 by LesC. Grid reference: TF 01600 59280. Condition: Couldn't find it.
The FBM hasn't moved, but I think the Clearway sign has! There is a new combined road junction and Clearway sign which doesn't match the OS sketch. Mind you, it didn't help that I didn't have GPS with me.

Visited on 16th April 2005 by RodS. Condition: Good.
Found easily with the aid of the OS sketch, though covered by vegetation. In excellent condition, though not the normal granite pillar type. Difficult to get a good GPS fix because of overhanging trees.
If you have any corrections or additions to this record, please let us know.
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