Geological Survey of Great Britain (England and Wales) Great Britain. Ordnance Survey. Sheet 330/331/344/345 drift. North Decimal Degree 50.8000. South Decimal Degree 50.5667. East Decimal Degree -1.0500. West Decimal Degree -1.6000. In upper margin: Drift (Second Edition). Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system. "Original Geological Survey on the one-inch scale by H. W. Bristow and W. T. Aveline, A.C. Ramsay, Local Director. Geological information published in 1856. Isle of Wight resurveyed on the Six-inch scale by Clement Reid (Tertiary) and Aubry Strahan, M.A.(Cretaeous), H.W. Bristow, F.R.S. Senior Director. Resurveye published Nov. 1888. Mainland Resurveyed on the six-inch scale by Clement Reid. Published Dec. 1895.".