Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 283 drift. Great Britain. Ordnance Survey of England. North Decimal Degree 51.350000. South Decimal Degree 51.1833. East Decimal Degree -1.2500. West Decimal Degree -1.6667. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights. Transverse Mercator projection. National grid system. "Original geological survey on the one-inch scale by W. T. Aveline et al. Published on Sheets 12 and 14 Old Series 1857-60. Resurveyed on the six-inch scale by F. J. Bennett and C. E. Hawkins, (Southern edge). Published wih Drift October 1898.".