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Xavier Becerra ~ Attorney General

Toolmark Comparison Criteria/Refresher

Toolmark Comparison Criteria/Refresher

Class Code
Subject Area
E- Firearms and Impression Evidence Program
Class Description 

This 2 1/2 day (20 hour) course will provide students with a review of the concepts and rationale of identifying striated and non-striated impression evidence. Recent challenges and relevant court decisions will be discussed. Each student will verify their rational, objective basis for making such identifications. Although new examiners can profit from this training, this course is limited to firearm and toolmark examiners who have either completed CCI's E201 course or have had extensive training in the comparison of striated toolmarks and about approximately one year of actually comparing toolmarks. Each class is limited to 30 students.


Instructor A Certified Instructor.
Teaching Methods
Classroom lectures, demonstrations, group discussions, and practical laboratory exercises
Students will be required to complete a series of practical exercises, and to explain the related concepts of toolmark identification and their rationale for the identification to the satisfaction of the instructors
Must have been performing striated toolmark comparisons in casework for at least a year and be familiar with accepted standards of casework documentation and common equipment and terminology used in that discipline. completion of Firearms and Toolmarks Introduction I and II (E102 and E103) and Toolmark Comparison Criteria (E201) is strongly recommended
Pre-course reading material may be assigned
Materials Fee
Tuition $
Course Contact
Mike Giusto (916) 695-1800, (916) 695-1805

Location Start Date

Click here to apply

If no classes are scheduled, you’ll be placed on a list that expresses your desire to attend this course.