toolmarks

toolmarks

A term of art referring to the physical characteristics of an object—e.g., a shoe, knife, gun, blunt instrument, etc.—found at a crime scene, which may help identify and prosecute the perpetrator. Each tool makes unique marks on different surfaces.
References in periodicals archive ?
Toolmarks and polished spots showing wear on the claws indicate they were purposefully removed from eagles, strung together and worn, researchers report online March 11 in PLOSONE.
Training and assistance with analysis are available in the following areas: latent prints, DNA, drug chemistry, explosives, firearms and toolmarks, gunshot residue, documents, digital evidence, trace evidence, and legal studies.
In addition to forensic document examinations, ink dating, and latent prints, Riley Welch LaPorte will now be offering Forensic Firearms & Toolmarks and Forensic Biology & DNA.
The new building will be completed in the fourth quarter of this year and it will administer nine laboratories providing evidence testing in the areas of chemistry, DNA, toxicology, firearms, toolmarks, document testing, fingerprints, electronic evidence and fire debris/arson.
The toolmarks found on fired bullets and cartridge cases are important physical evidence in shooting incidents.
Toolmarks taken from explosively formed penetrators can link the component's origins to the lathe upon which it was manufactured.
He addresses the "gatekeeping" role of judges; the admissibility of social science evidence; pretrial forensic issues, especially as they relate to DNA; the history and scientific basis for common forms of evidence; fingerprint, fire, explosion, and arson, and bloodstain pattern and human scent evidence; handwriting comparison; hair and bite mark analysis; toolmarks, firearms, and bullet lead comparison; and juror expectations and the "CSI effect.
A similar report published by the National Research Council in 2008, specifically on "Ballistic Imaging," concluded that "[t]he validity of the fundamental assumptions of uniqueness and reproducibility of firearms-related toolmarks has not yet been fully demonstrated.
Prehistoric woodworking: the analysis and interpretation of Bronze and Iron Age toolmarks.
This view is interesting, and in particular, shows any longitudinal streaks, whether large toolmarks or copper fouling.
He covers basic geometric optics and basic microscopy for toolmark examiners, precision measurement, measurement with the microscope, collecting and documenting toolmarks, preparing toolmark standards, doing toolmark cases, and how statistical pattern comparison methods can be applied to toolmarks.