Examination of Toolmarks from Sequentially Manufactured Tongue-and-Groove Pliers

    Volume 25, Issue 4 (October 1980)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Published Online: 1 October 1980

    Page Count: 14


    Cassidy, FH
    Criminalist, Santa Barbara Regional Laboratory, Goleta, Calif.

    (Received 22 January 1980; accepted 11 April 1980)

    Abstract

    Tongue-and-groove pliers are often used in burglaries to twist off doorknobs (to gain entrance) and it was deemed necessary to determine if new, sequentially manufactured pliers would each produce similar toolmarks that would be indistinguishable. Evaluation of the toolmarks from three sets of sequentially broached Craftsman® pliers, together with an analysis of the manufacturing processes, verified that individual and not repetitive structural characteristics are generated.


    Paper ID: JFS11294J

    DOI: 10.1520/JFS11294J

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    Title Examination of Toolmarks from Sequentially Manufactured Tongue-and-Groove Pliers
    Symposium , 0000-00-00
    Committee E30