Geological Survey of Great Britain (England and Wales) Great Britain. Ordnance Survey. Sheet 347 drift. North Decimal Degree 50.4667. South Decimal Degree 50.3000. East Decimal Degree -4.5333. West Decimal Degree -4.9333. Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system. Depth is shown by contour interval. "Original Geological Survey on the one-inch scale, by Sir H.T. De la Beche, C. B. F.R.S. Published on Sheets 30 & 31, Old Series. Resurveyed on the six-inch scale, by W.A.E. Ussher et al. Reprinted with minior adjustments in 1951.".