Tool Mark Impressions

A tool mark is any impression, scratch, or abrasion made when contact occurs between a tool and a object. 

• true 
• false

What type of tool mark is the result of the tool pressured into a soft surface?

• Abrasion
• Cut
• Indentation
• Patent

Why should an investigator not try to put the tool into the tool mark at the crime scene

• it will destroy the toolmark evidence that is there
• it will leave new evidence behind covering up the original
• contamination of the evidence
• all of these

What are "Plastic" impressions? (Choose 2)

• 3-D imprints left in a soft substance such as mud or snow

• 2-D impressions that are visible to the unaided eye

• Impressions hidden to the eye but can be made visible using development techniques

• Impressions that are easily lost and must be documented right away with casting

When collecting impression evidence what should you do first?

• Gel lifting

• Lift Latent Impressions

• Cast it if it is plastic with dental stone or plaster

• Photograph it and use a ruler for scale

A tool marks left at a crime scene would be considered.

• Circumstantial Evidence

• Direct Evidence

What tool would most likely have been used?

• 
• 
• 

What tool would most likely have been used?

• 
• 
• 

What tool most likely made this mark?

• 
• 
• 

What tool most likely made this mark?

• 
• 
•