Great Britain. Ordnance Survey of England. Great Britain. Geological Survey of England and Wales. Sheet 121 drift. Geological Survey of Great Britain. North Decimal Degree 53.083300. South Decimal Degree 52.9333. East Decimal Degree -2.9167. West Decimal Degree -3.3333. In upper left margin: Ordnance Survey of England and Wales. Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system. "Original geological survey published on Old Series one-inch maps in 1850 and 1855, with some revisions in 1895. Re-surveyed on the six-inch scale between 1910 and 1913 by G. W. Lamplugh et al.".