Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 245 drift. Great Britain. Ordnance Survey of England. North Decimal Degree 51.683300. South Decimal Degree 51.5167. East Decimal Degree -4.5833. West Decimal Degree -5.0000. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights. Transverse Mercator projection. National grid system. Depth shown by contour intervals "Original geological survey on the Old Series one-inch map, Sheet 38, published in 1845. Re-surveyed on the six-inch scale by A. Strahan et al.".