Crime Scene Sketching Vocabulary Handout PDF

Crime Scene Sketching Vocabulary Handout Baseline Mapping most basic, easiest and least accurate measuring technique in which a baseline is identified and evidence is measured off the baseline Elevation Sketch sketch drawn as if the viewer is looking straight ahead at the scene; also known as a sid...

Crime Scene Sketching Vocabulary Handout Baseline Mapping most basic, easiest and least accurate measuring technique in which a baseline is identified and evidence is measured off the baseline Elevation Sketch sketch drawn as if the viewer is looking straight ahead at the scene; also known as a side-view sketch Exploded Sketch sketch drawn with the floor in the middle and the walls drawn flat surrounding the floor; also known as a cross-sectional sketch Final Sketch finished, polished rendition of rough sketch; drawn to scale; often for courtroom presentation Global Positioning System (GPS) satellite-based navigation system which transmits signals and calculates location Overhead Sketch sketch drawn as if the viewer is looking down from above the scene; also known as a bird’s eye view sketch Polar/Grid Mapping measuring technique most useful in large outdoor scenes with few landmarks in which distance, angles and polar directions of evidence are measured from fixed points Rectangular Coordinate Mapping measuring technique in which two baselines are identified and evidence is measured off each Rough Sketch first, pencil-drawn outline of a crime scene; drawn at the crime scene; not usually to scale Three-Dimensional Sketch sketch showing the scene in three dimensions; typically created using a computer program Total Station electronic surveying instrument with an integrated computer which utilizes laser rangefinders to measure distances and angles in three dimensions Triangulation Mapping most accurate, laborious and time consuming measuring technique not requiring advanced technology in which at least two fixed point are identified and at least two evidence points are measured from each fixed point  Mapping Examples Baseline Mapping Rectangular Coordinate Mapping Triangulation Mapping Polar/Grid Mapping