ISBN: 9781420043938
In the wake of the Daubert ruling, the use of forensic toolmark evidence in court has been problematic, in that the conclusions of forensic scientists as to toolmark origin often lack scientifically sound statistical proof. In the Color Atlas of Forensic Toolmark Identification, noted forensic expert Nicholas Petraco helps move toolmark examination from an art to a science. The first part of the book contains an anthology of tried and true methods, procedures, and traditional techniques used by practitioners of this discipline for over a century. It contains rationales and methodologies for casework, discussion of the use of new materials and techniques for preparation of known standards, and the application of various methods of statistical proof to further establish toolmark examination as a sound scientific endeavor. The second section contains a compilation of commonly used hand tools and the marks they typically produce.
Provides clear instruction on how to:
Use lenses and microscopes to view images of toolmarks
Make accurate and precise measurements of tools on macroscopic and microscopic scales
Properly photograph toolmark evidence
Compare a subject tool with the questioned toolmarks to determine toolmark origin
Examines marks made by a range of tools, including:
Screwdrivers
Crowbars and prybars
Handsaws
Hammers
Hatchets and Axes
Wrenches
Vise grips
Pliers
Wire cutters
Metal snips
Crimping tools
Knives and scissors
Chisels and punches
Drill bits
More than 400 color photos enhance the text, and numerous case studies describe evidence found and conclusions drawn from the evidence. This unique atlas empowers law enforcement professionals to capture the evidence they need to solve the case.
| Edition : | 10 |
| Number of Pages : | 176 |
| Published : | 09/21/2010 |
| isbn : | 9781420043938 |
