What is a primary purpose of finished sketches in crime scene investigation?

The primary purpose of finished sketches in crime scene investigation is to provide a visual representation for court. These sketches serve as a detailed and accurate portrayal of the crime scene, capturing the layout, key evidence locations, and relevant details that can assist in understanding the context of the incident. In legal proceedings, having a visual aid can help jurors, judges, and attorneys grasp complex spatial relationships and other critical factors central to the case.

While collecting physical evidence, making first impressions, and documenting witness statements are important aspects of crime scene investigation, they are not the main function of finished sketches. Finished sketches are specifically designed to support the judicial process by presenting important information in a clear and organized manner.