Great Britain. Ordnance Survey of England. (Third edition) Great Britain. Geological Survey of England and Wales. Sheet 83 solid. Geological Survey of Great Britain. North Decimal Degree 53.616700. South Decimal Degree 53.4500. East Decimal Degree -2.9333. West Decimal Degree -3.3500. In the upper left corner: Ordnance Survey of England (Third Edition). Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system. "Original geological by C. E. De Rance published in 1869, revised 1873. Resurveyed in 1927, 1930, and 1937, by F. W. Cope, et al.".