The inflicted weapon should be

- The stab injury shows acute angles at both ends, which are suggestive of double edged weapon. If a double edged weapon is used, the wound will be elliptical or slit-like and both angles will besharp or pointed. If the knife penetrates to full length up to the guard, one or both edges maybe blunt. - In case of single edged knife wound is wedge shaped sometimes blunt edge of knife can harm the skin giving it a tail like appearance which is known as FISH TAIL. -In case of screwdriver the wound is slit-like with squared ends and abraded margins. - In case of ice pick the wound is circular in shape