Flush Bracket G1680: Gun Hill, Rectory 

SW face, S angle of rectory [2GL+]; W face of Rectory, E side of Gun Hill [3GL] - FB reported destroyed 15/06/1961.
Location
Grid reference: TQ 6571 7799.
Landranger 177: East London, Billericay & Gravesend.
Landranger 178: Thames Estuary, Rochester & Southend-on-Sea.
Structure: Private house.
Waypoint: FG1680.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Snodland,
15.45km to the south.
Second Geodetic Levelling, England & Wales (1946-51)
This flush bracket was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 85.5040 feet [26.0616 metres] above mean sea level (Newlyn datum). The surveyor's description was SW face, S angle of rectory.
Third Geodetic Levelling, England & Wales (1950-68)
This flush bracket was used during the Third geodetic levelling, England & Wales. It was included on the Hatfield Peverel to Snodland levelling line. The surveyor's description was W face of Rectory, E side of Gun Hill [destroyed].
Location
Grid reference: TQ 6571 7799.
Landranger 177: East London, Billericay & Gravesend.
Landranger 178: Thames Estuary, Rochester & Southend-on-Sea.
Structure: Private house.
Waypoint: FG1680.
Neighbouring Flush Brackets
| G5225 | Mill House Farm 773.69m to the north. |
| G1679 | Low Street, Station, Gate House 1.26km to the east. |
| G2433 | Tilbury, Railway Bridge 1.71km to the south. |
| S0883 | East Tilbury, Goshem's Farm 2.16km to the east. |
| G1678 | Linford 2.28km to the northeast. |
Second Geodetic Levelling, England & Wales (1946-51)
This flush bracket was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 85.5040 feet [26.0616 metres] above mean sea level (Newlyn datum). The surveyor's description was SW face, S angle of rectory.
Third Geodetic Levelling, England & Wales (1950-68)
This flush bracket was used during the Third geodetic levelling, England & Wales. It was included on the Hatfield Peverel to Snodland levelling line. The surveyor's description was W face of Rectory, E side of Gun Hill [destroyed].
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