Forensics - marks & impressions
- Created by: Ashlee
- Created on: 01-05-15 17:34
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- Tool marks and impressions
- characteristics
- class
- individual
- striations on surface of tool
- types of marks
- static/ compression/ indented
- pressed into soft material
- dynamic/ grinding/ sliding
- slide across surface leaving striations
- cutting toolmarks
- combination of compression and sliding marks as it indents material
- multistroke
- repetitive action
- static/ compression/ indented
- recovery
- torch
- photography
- recover whole item
- casting
- examination
- visual
- unique characteristics due to manufacture and use
- examine tool first then compare to crime scene
- reduce cognitive bias
- test marks
- same tool
- malleable material
- angle of incidence
- striations
- trace evidence
- recent contact
- deposits of surface paint
- counter marks
- evidential value
- probative value?
- useful in case?
- useful for intelligence?
- other evidence types from tools?
- other marks
- firearms
- gloves
- bites
- on bones
- crashes
- tyre impressions
- characteristics
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