The field concept is considered necessary for methodical and technical perfection of isolinear mapping of the Earth surface morphometry with view to new technological possibilities. Comparative analysis of existing mapping techniques shows the advantage of moving circle technique, Two schemes are introduced of isolinear morphometric maps compilation (slopes, drainage densities and roughness of topography) which are based on presentation of drainage pat-tern and topography as discrete points using small quadrangles net, The schemes permit to simplify mapping process using digitisers and computers.