sketching Flashcards
What is the purpose of a crime scene sketch
- a record of the size, and distance of the crime scene and evidence found in it.
- clarification of information from photos and videos
- easiest way to present a crime scene layout
what is a rough sketch?
drawn at the scene, not the final version, final version is made from the rough sketch, typically done in pencil, and not to scale
when is the rough sketch made?
done after photos, and before anything is moved or altered, does not have to be accurate or to scale
where should measurements be taken from?
fixed point of reference
can you have numbers and letters on the drawing?
yes provided there is a legend
what are the three measurement methods?
triangulation, rectangular co-ordinate, and baseline
what is the triangulation method of measurement?
uses two fixed points within a crime scene creating a triangle
what is the rectangular co-ordinate method?
measuring the distance between an object from two mutually perpendicular objects
when do you use the rectangular co-ordinate method?
indoor scenes
what is the baseline method?
lay a tape in the middle of the scene measures items at right angles to the baseline.
What is a scene diagram?
demonstrative aid, not evidence, used for court purposes, assists with court proceedings, and helps to visualize crime scene
what do you need to consider before a search is being done?
- size and type of scene
- method of search
- parameters and boundaries
- roles in the search
What was the problem in the search for Andrea Atkinson?
nine days after the initial search the girls body was found in a janitors closet but the problem also was that there was no record of when or who had searched that room if at all.
what are the 4 main search techniques?
- line
- grid
- zone
- spiral
what is the line search?
multiple people travel in parallel straight lines