Planimetry is the part of forensic planimetry: Planimetry is responsible for studying, evaluating and graphically representing the shape and precision in which the body (decedent) is located and each of the different material elements of evidence found at the site through the use of measurement techniques that will give life to the initial sketch and subsequently to the final scale plan, which will provide graphic information and provide the official of the place, contour, location of furniture and real estate, objects, material elements of evidence and final position of the corpse, among others.

The analysis of these aspects is of great importance to the valuable information provided to the prosecutor and investigators. Among the main functions of the planimeter are the following:

1. Carry out the fixation of sites and events through plans, sketches and drawings.

2. Carry out the manual and technical design of the characteristics of the place, site and other elements found at the scene.

3. Prepare the sketches, according to the nature or scenario where the event occurred.

4. Project the different projectile trajectories in other dimensions (depending on the case).

5. Interpret the incriminated objects with a scale design.

6. Prepare reproductions of objects and other material species of the crime, based on the descriptions of witnesses.

7. Prepare spoken portraits of wanted people supported by descriptions.