If you are an investigator, you should know how; it is part of your training.
If you are not and you do not know, you should not be moving anything at a crime scene.
That is generally going to refer to the size of a bullet fired from a gun. It will be used at a crime scene where a gun was used.
tom because he was on the crime scene and had the gun in his hand which we find out he did commit the crime even though hes only a boy
primary crime scene
Crime scene Vehicle along with all essential crime scene Investigation boxes.
Who committed the crime is usually unknown in a crime scene and has to be proven with evidence.
The primary crime scene is the place where a crime was first committed.
When a bullet is fired from a rifled firearm, the rifling leaves marks on the bullet. Those marks are unique to that gun, and no other gun makes exactly the same marks. If a bullet (or fired cartridge casing) is recovered from a crime scene, and we suspect that YOUR gun was used to commit this crime, then a sample bullet is fired from your gun, and compared to the crime scene bullet. A comparison microscope is used to compare the bullets, or marks made on the fired cartridge case by the extractor and firing pin.
A primary crime scene is where the actual crime took place, such as a murder scene. A secondary crime scene is a location related to the crime, like where evidence or a body was dumped or a suspect was apprehended.
Crime Scene Investigation orCrime Scene Investigators
The primary crime scene is the place where a crime was first committed.
Crime Scene Investigation
The "scene of crime" or "crime scene".