Sub-Class Characteristics
Definition
Features common to a small batch of weapons made with the same tool before the tool wore out. Sit between class and individual. Must be excluded before claiming identification.
Related terms
- AFTE Conclusion Scale
- Association of Firearm and Tool Mark Examiners scale: identification, inconclusive (subdivided A, B, C), elimination, unsuitable. The court-admissible vocabulary.
- Breech Face
- The forward surface of the bolt, slide, or breech block that seals the chamber and contacts the cartridge case head during firing....
- 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...
- IBIS / NIBIN
- Integrated Ballistic Identification System (Forensic Technology Inc., Canada) and Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF)'s National Integrated Ballistic Information Network....
- Individual Characteristics
- Surface features on a fired bullet or cartridge case that arise from random or unique events (tool wear, corrosion, service damage) and...
- Rifling
- The helical groove pattern cut into a firearm barrel that imparts spin to the bullet, stabilising it in flight. Rifling lands and...
Explained in
- Forensic Examination of Firearms, Bullets, Shells and CartridgesFeatures common to a small batch of weapons made with the same tool before the tool wore out. Sit between class and individual. Must be excluded before claimin...