Traditionally, a hand-created drawing (or map) based on traditional drafting techniques is represented as a two-dimensional (2D) diagram. In the past, this may have been crudely drawn or plotted to varying degrees of accuracy, but these days experts use free room layout makers like EdrawMax or EdrawMax Online as these tools provide free symbols that allow the police and fire crime scenes to be set. Often investigators use drafting technology tied to their scene measuring instrument; for example, many police surveyors draft plans using software that downloads data from their electronic theodolites.
