Topography is the science that studies and graphically represents the surface of the Earth in a realistic way, not only by drawing maps, but also by indicating changes in level (through curves), the type of surface and showing distances to scale.
A program that helps you develop topographic maps
To make dimensioned drawings we can use Therion, a tool designed to represent spaces using vector drawings, admitting topographies up to 25 square meters and allowing to insert images, to guide us when starting a project.
Being an application focused on a specialized use, the interface is not easy to handle, since they are needed knowledge in topography to be able to control the program.
As a curious fact, it must be added that it carries a utility with which we can calculate our blood alcohol level, being only necessary to enter a series of data.