1GL Bolt: Bawtry, Church   

Bolt in St. Nicholas's Church tower ; 3.77 ft. above surface [1GL, London to Doncaster, Mark No. 914] - presumably NOT the same as PA BOLT ST NICHOLAS CH TWR NW FACE W ANG (7.7389m ODN, 1.2m AGL) unless one or other height is incorrectly shown.

Location
Grid reference: SK 6531 9299.
Landranger 111: Sheffield & Doncaster, Rotherham, Barnsley & Thorne.
Structure: Church.
Waypoint: BT0665.

Neighbouring Bench Marks

BOLT	Austerfield, Church 1.90km to the northeast.
BOLT	Tickhill, Church 6.16km to the west.
BOLT	Finningley, Church 6.37km to the north.
BOLT	Gringley-on-the-Hill, Church 8.59km to the east.
BM	Market Warsop, Butt Lane 9.93km to the northwest.

The nearest fundamental bench mark is Hibaldstow (1987), 29.80km to the east.

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 29.2680 feet [8.9209 metres] above mean sea level (Liverpool datum). It was included on the London to Doncaster levelling line. The surveyor's description was Bolt in St. Nicholas's Church tower ; 3.77 ft. above surface.