Land-Form PROFILE: 1:10 000 scale digital height dataset of Great Britain

[From "http://www.ordnancesurvey.co.uk/products/landformprofile/"] Land-Form PROFILE provides detailed height data defining the physical shape of the landscape of Great Britain. The 1:10 000 scale digital height dataset is available as either Contours or a Digital Terrain Model (DTM) covering the whole of Great Britain. Land-Form PROFILE is available in either NTF or DXF^? (AutoCAD? release 12 compatible). Features and benefits: - A national dataset consisting of edge-matched Contours and DTM tiles. - Contours are indexed every 25 metres (50 metres in mountain areas). - The Contour dataset includes Mean High Water and Mean Low Water marks in - - England and Wales, and Mean High and Low Water springs in Scotland. - The Contour dataset also includes spot heights on significant features, in low lying areas, and along linear features. - The DTM^?s 10 metre grid offers a manageable file size for most desk-top GIS.