Welcome to the Alabama
Department of Forensic Sciences

  Reports and Public Records Requests


Tool Mark Analysis

Tool Marks are impressions or marks produced when a tool comes into contact with an object; the tool is generally the harder of the two objects. Physical contact between a tool and the surface of an object produces marks not only characteristic of the type of tool used, but marks that may be unique to a single tool.

Laboratory Tests Performed

  • Comparison of the questioned tool mark to a suspect tool to determine common origin.
  • Fracture matching to determine common origin