CRIME SCENE SKETCHING THE CRIME SCENE SKETCH Accurately
![CRIME SCENE SKETCHING CRIME SCENE SKETCHING](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-1.jpg)
![THE CRIME SCENE SKETCH Accurately portrays the physical facts Relates the sequence of events THE CRIME SCENE SKETCH Accurately portrays the physical facts Relates the sequence of events](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-2.jpg)
![OVERVIEW A crime scene sketch assists in: 1) Interviewing and interrogating persons 2) Preparing OVERVIEW A crime scene sketch assists in: 1) Interviewing and interrogating persons 2) Preparing](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-3.jpg)
![ROUGH SKETCH The rough sketch is the first pencil-drawn outline of the scene and ROUGH SKETCH The rough sketch is the first pencil-drawn outline of the scene and](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-4.jpg)
![MATERIALS Paper Clipboard Pencil Eraser Measuring tape Compass Ruler MATERIALS Paper Clipboard Pencil Eraser Measuring tape Compass Ruler](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-5.jpg)
![STEPS 1. Observe and plan 2. Measure distances Steel tape is best (doesn’t stretch) STEPS 1. Observe and plan 2. Measure distances Steel tape is best (doesn’t stretch)](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-6.jpg)
![STEPS 3. Outline the area North should be at the top of the paper STEPS 3. Outline the area North should be at the top of the paper](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-7.jpg)
![PLOTTING METHODS Rectangular Coordinates Uses two adjacent walls as fixed points as distances are PLOTTING METHODS Rectangular Coordinates Uses two adjacent walls as fixed points as distances are](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-8.jpg)
![PLOTTING METHODS Triangulation Common in outdoor scenes Uses straight-line measurements from two fixed objects PLOTTING METHODS Triangulation Common in outdoor scenes Uses straight-line measurements from two fixed objects](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-9.jpg)
![PLOTTING METHODS Cross-Projection Presents floors and walls as they were on one surface PLOTTING METHODS Cross-Projection Presents floors and walls as they were on one surface](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-10.jpg)
![STEPS 5. Record details 6. Make notes Explanation of evidence Description Time found How STEPS 5. Record details 6. Make notes Explanation of evidence Description Time found How](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-11.jpg)
![STEPS 7. Identify the sketch with a legend a scale Case number Type of STEPS 7. Identify the sketch with a legend a scale Case number Type of](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-12.jpg)
![](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-13.jpg)
![CRIME SCENE SKETCH Date: August 14, 2005 Criminalist: Ann Wilson Time: 11: 35 am CRIME SCENE SKETCH Date: August 14, 2005 Criminalist: Ann Wilson Time: 11: 35 am](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-14.jpg)
![FINAL SKETCH Finished sketch—DONE LATER! • Looks prettier: to scale, etc. • Drawn by FINAL SKETCH Finished sketch—DONE LATER! • Looks prettier: to scale, etc. • Drawn by](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-15.jpg)
![CRIME SCENE SKETCH CRIME SCENE SKETCH](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-16.jpg)
- Slides: 16
![CRIME SCENE SKETCHING CRIME SCENE SKETCHING](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-1.jpg)
CRIME SCENE SKETCHING
![THE CRIME SCENE SKETCH Accurately portrays the physical facts Relates the sequence of events THE CRIME SCENE SKETCH Accurately portrays the physical facts Relates the sequence of events](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-2.jpg)
THE CRIME SCENE SKETCH Accurately portrays the physical facts Relates the sequence of events at the scene Establishes the precise location and relationship of objects and evidence at the scene Creates a mental picture of the scene for those not present Is a permanent record of the scene
![OVERVIEW A crime scene sketch assists in 1 Interviewing and interrogating persons 2 Preparing OVERVIEW A crime scene sketch assists in: 1) Interviewing and interrogating persons 2) Preparing](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-3.jpg)
OVERVIEW A crime scene sketch assists in: 1) Interviewing and interrogating persons 2) Preparing an investigative report 3) Presenting the case in court The sketch supplements photographs, notes, plaster casts and other investigative techniques. Two types of sketches 1. Rough sketch 2. Finished or scale sketch
![ROUGH SKETCH The rough sketch is the first pencildrawn outline of the scene and ROUGH SKETCH The rough sketch is the first pencil-drawn outline of the scene and](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-4.jpg)
ROUGH SKETCH The rough sketch is the first pencil-drawn outline of the scene and the location of objects and evidence within this outline. Usually not drawn to scale Although distances are measured and indicated in the sketch Sketch after photographs are taken and before anything is moved. Sketch as much as possible.
![MATERIALS Paper Clipboard Pencil Eraser Measuring tape Compass Ruler MATERIALS Paper Clipboard Pencil Eraser Measuring tape Compass Ruler](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-5.jpg)
MATERIALS Paper Clipboard Pencil Eraser Measuring tape Compass Ruler
![STEPS 1 Observe and plan 2 Measure distances Steel tape is best doesnt stretch STEPS 1. Observe and plan 2. Measure distances Steel tape is best (doesn’t stretch)](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-6.jpg)
STEPS 1. Observe and plan 2. Measure distances Steel tape is best (doesn’t stretch) Use conventional units of measurement (inches, feet, centimeters, meters) Measure from fixed locations (walls, trees, corners, other immovable objects) Determine the scale Take the longest measurement at the scene and divide it by the longest measurement of the paper used for sketching. ½”= 1’small rooms ¼”= 1’large rooms 1/8”= 1’very large rooms ½”= 10’large buildings 1/8”= 10’large land area
![STEPS 3 Outline the area North should be at the top of the paper STEPS 3. Outline the area North should be at the top of the paper](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-7.jpg)
STEPS 3. Outline the area North should be at the top of the paper 4. Locate & Plot objects and evidence within the outline Plotting methods are used to locate objects and evidence on the sketch. They include the use of: Rectangular coordinates A baseline Triangulation Compass points.
![PLOTTING METHODS Rectangular Coordinates Uses two adjacent walls as fixed points as distances are PLOTTING METHODS Rectangular Coordinates Uses two adjacent walls as fixed points as distances are](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-8.jpg)
PLOTTING METHODS Rectangular Coordinates Uses two adjacent walls as fixed points as distances are measured at right angles Baseline Method Run a baseline from one fixed point to another, from which measurements are taken at right angles.
![PLOTTING METHODS Triangulation Common in outdoor scenes Uses straightline measurements from two fixed objects PLOTTING METHODS Triangulation Common in outdoor scenes Uses straight-line measurements from two fixed objects](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-9.jpg)
PLOTTING METHODS Triangulation Common in outdoor scenes Uses straight-line measurements from two fixed objects to the evidence to create a triangle with evidence in the angle formed by two straight lines. Compass Point Method Uses a protractor to measure the angle formed by two lines
![PLOTTING METHODS CrossProjection Presents floors and walls as they were on one surface PLOTTING METHODS Cross-Projection Presents floors and walls as they were on one surface](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-10.jpg)
PLOTTING METHODS Cross-Projection Presents floors and walls as they were on one surface
![STEPS 5 Record details 6 Make notes Explanation of evidence Description Time found How STEPS 5. Record details 6. Make notes Explanation of evidence Description Time found How](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-11.jpg)
STEPS 5. Record details 6. Make notes Explanation of evidence Description Time found How & who did the packaging Where the evidence goes
![STEPS 7 Identify the sketch with a legend a scale Case number Type of STEPS 7. Identify the sketch with a legend a scale Case number Type of](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-12.jpg)
STEPS 7. Identify the sketch with a legend a scale Case number Type of crime Investigator Persons assisting Direction of North Identifying information in sketch -Key Scale
![](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-13.jpg)
![CRIME SCENE SKETCH Date August 14 2005 Criminalist Ann Wilson Time 11 35 am CRIME SCENE SKETCH Date: August 14, 2005 Criminalist: Ann Wilson Time: 11: 35 am](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-14.jpg)
CRIME SCENE SKETCH Date: August 14, 2005 Criminalist: Ann Wilson Time: 11: 35 am Location: 4358 Rockledge Dr. , St. Louis, Mo. N 5 ft 14
![FINAL SKETCH Finished sketchDONE LATER Looks prettier to scale etc Drawn by FINAL SKETCH Finished sketch—DONE LATER! • Looks prettier: to scale, etc. • Drawn by](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-15.jpg)
FINAL SKETCH Finished sketch—DONE LATER! • Looks prettier: to scale, etc. • Drawn by skilled individual (ex: artist) • May be done on computer
![CRIME SCENE SKETCH CRIME SCENE SKETCH](https://slidetodoc.com/presentation_image_h2/0d16824740b41bcaf372325c6ae6e568/image-16.jpg)
CRIME SCENE SKETCH
Corpus delicti
Crime scene sketching
Crime scene drawing
Sketching crime scene
Crime scene notes
Crime scene sketches
Sketch all serious crime and crash scenes:
A crime scene sketch should include
Cross-projection sketch
Cross projection sketch
Final sketch crime scene
Corpus delicti
What is cross projection sketch
Sketch all serious crime and crash scenes:
Margret schlosser
Individual vs class evidence
Seven s of crime scene