1GL Bolt: Bagby, Church 

Bagby Church. Bolt in South face of tower ; 3.79 ft. above surface [1GL, Selby to Newcastle-upon-Tyne, Branch Levelling from Mark No. 75] - evidently NOT the same as CUT MARK: ST MARYS CH C S FACE (67.8790m ODN, 0.3m AGL).
Location
Grid reference: SE 4634 8062.
Landranger 100: Malton & Pickering, Helmsley & Easingwold.
Structure: Church.
Waypoint: BT0780.
Neighbouring Bench Marks
The nearest fundamental bench mark is Northallerton,
13.48km to the north.
First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 225.3250 feet [68.6791 metres] above mean sea level (Liverpool datum). It was included as a side level on the Selby to Newcastle-upon-Tyne levelling line. The surveyor's description was Bagby Church. Bolt in South face of tower ; 3.79 ft. above surface.
Location
Grid reference: SE 4634 8062.
Landranger 100: Malton & Pickering, Helmsley & Easingwold.
Structure: Church.
Waypoint: BT0780.
Neighbouring Bench Marks
| BM | Stockhill Green 1.96km to the south. |
| BOLT | Thirkleby Bridge 3.23km to the south. |
| BOLT | Sowerby, St. Oswald's Church 3.32km to the west. |
| BOLT | Thirsk Bridge 3.50km to the northwest. |
| BM | Thirsk Bridge 3.50km to the northwest. |
First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 225.3250 feet [68.6791 metres] above mean sea level (Liverpool datum). It was included as a side level on the Selby to Newcastle-upon-Tyne levelling line. The surveyor's description was Bagby Church. Bolt in South face of tower ; 3.79 ft. above surface.
If you have any corrections or additions to this record, please let us know.