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OSBM Bolt: Boston, St Botolph's Church 
OSBM Bolt on S face of St Botolph's Church [3GL]; BOLT TOP LEDGE WALL S FACE ST BOTOLPHS CH.
Location
Grid reference: TF 3268 4416.
Landranger 131: Boston & Spalding.
Structure: Church.
Waypoint: OS0071.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Navenby,
34.56km to the northwest.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Boston to Immingham and Thornham to Navenby levelling lines. The surveyor's description was OSBM Bolt on S face of St Botolph's Church.
Logged Visits
Logged on 12th May 2007 by RodS. Condition: Probably destroyed.
Could not find Bolt; the most likely location answering the description "ledge" is just to the left of the south door of the church; a damaged section of the ledge could have been the location of the Bolt
Location
Grid reference: TF 3268 4416.
Landranger 131: Boston & Spalding.
Structure: Church.
Waypoint: OS0071.
Neighbouring Flush Brackets
| G1488 | Boston, West Street 300.17m to the southwest. |
| S0574 | Boston, High Street 333.77m to the south. |
| G4136 | Black Sluice Pumping Station 1.28km to the south. |
| G1487 | Boston, Sleaford Road 1.29km to the west. |
| G4645 | Burton Corner 1.82km to the northeast. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Boston to Immingham and Thornham to Navenby levelling lines. The surveyor's description was OSBM Bolt on S face of St Botolph's Church.
Logged Visits
Logged on 12th May 2007 by RodS. Condition: Probably destroyed.
Could not find Bolt; the most likely location answering the description "ledge" is just to the left of the south door of the church; a damaged section of the ledge could have been the location of the Bolt
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