Unit 3 Creative Project
Fs Ch 5
Chapter17Steel structures by Vesrgese
Tool Marks
Impressions
NOVEMBER 7, 2012 WARM-UP: STANDARD-SFS1b. Distinguish and categorize physical and trace evidence.
Impressions 1. Tool Marks Tool marks are made when a harder object comes in contact with a softer object, leaving marks on it. 2.
