Great Britain. Ordnance Survey of England. Great Britain. Geological Survey of England and Wales. Sheet 18 solid. Geological Survey of Great Britain. North Decimal Degree 55.000000. South Decimal Degree 54.8333. East Decimal Degree -2.4833. West Decimal Degree -2.9167. 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 by R. Russell, D. Burnes, T. V. Holmes, E. J. Hebert, and A. Colvin. Published on the one inch scale in 1890. Re-surveyed in 1923-7 by F. M. Trotter and S.E. Hollingworth, Bernard Smith, District Geologist.".