Great Britain. Ordnance Survey of England. Great Britain. Geological Survey of England and Wales. Sheet 55 drift. Geological Survey of Great Britain. North Decimal Degree 54.266700. South Decimal Degree 54.1167. East Decimal Degree 0.1667. West Decimal Degree -0.2500. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system."Reprinted 1958.".