Consecutive Matching Striae (CMS)

Related terms

AFTE Theory of Identification

The Association of Firearm and Tool Mark Examiners' standard (1992, revised 2011) for reporting tool-mark comparison conclusions as Identification, Inconclusive, or Elimination...

BalliScan 3D

Foster and Freeman's three-dimensional topographic bullet comparison instrument that maps striated surfaces using structured-light interferometry for both optical and digital comparison workflows.

Class Characteristics

Features deliberately or systematically imparted to a group of items by design or manufacture, such as the calibre of a bullet, the...

Comparison Microscope

Two compound microscope bodies connected by an optical bridge that presents one half of each body's image in a single split eyepiece...

Individual Characteristics

Surface features on a fired bullet or cartridge case that arise from random or unique events (tool wear, corrosion, service damage) and...

Leica FSC

Leica Forensic Comparison System; a motorised zoom comparison microscope used in firearms and toolmark examination at CFSL laboratories in India, European national...

PCAST Report (2016)

The President's Council of Advisors on Science and Technology 2016 report on forensic science that found firearms mark analysis had not yet...

Projectina PAG II

A high-precision Swiss comparison microscope with motorised stages and quantitative striation-angle measurement, used at Swiss cantonal forensic labs and German LKA laboratories.

Striations

Fine parallel scratches on a fired bullet's surface, produced by asperities on the barrel's land surfaces. Each striation reflects the surface topography...

Explained in

• Bullet Striation Comparison and the Comparison MicroscopeA run of adjacent, individually corresponding striae observed across two bullets in the comparison microscope split field. The length of the longest CMS run is...