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OSBM Bolt 
OSBM Bolt on base of fire hydrant, 15' SW of production of hedge, S side of crossroads [3GL]; OSBM BOLT BASE HYDRANT 4.6M SW PRODN HEDGE S SIDE CROSS RDS.
Location
Grid reference: SN 4621 0409.
Landranger 159: Swansea & Gower, Carmarthen.
Structure: Other.
Waypoint: OS0770.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Bishopston,
18.55km to the southeast.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Bishopston to Carmarthen levelling line. The surveyor's description was OSBM Bolt on base of fire hydrant, 15' SW of production of hedge, S side of crossroads.
Logged Visits
Logged on 8th September 2006 by iainmac. Condition: Couldn't find it.
No sign of a fire hydrant.
Location
Grid reference: SN 4621 0409.
Landranger 159: Swansea & Gower, Carmarthen.
Structure: Other.
Waypoint: OS0770.
Neighbouring Flush Brackets
| G3830 | Trimsaran 1.50km to the northwest. |
| G3829 | Pant-y-llyn 1.65km to the southeast. |
| S1158 | Burry Port, St Mary's Church 3.18km to the south. |
| G3753 | Spudder Bridge Inn 3.27km to the northwest. |
| G3828 | Cwmbach 3.32km to the southeast. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Bishopston to Carmarthen levelling line. The surveyor's description was OSBM Bolt on base of fire hydrant, 15' SW of production of hedge, S side of crossroads.
Logged Visits
Logged on 8th September 2006 by iainmac. Condition: Couldn't find it.
No sign of a fire hydrant.
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