Length of stab gives information about -
The synopsis of forensic medicine & toxicology ; Dr k.s narayan reddy ; 28th edition ; Pg.no. 114 : The length of the wound is slightly less than the width of the weapon upto which it has been driven in ,because of the stretching of the skin . Therefore length of stab wound gives information of the width of the weapon .
Length of blade
Width of blade
Angle of inseion
Thickness of the blade
Mechanical injuries