What does a cross-projection drawing illustrate?

A cross-projection drawing is a specialized tool used in crime scene investigations that provides a unique perspective on how different objects relate to each other in a spatial context. It illustrates the interrelationships of objects in different planes, allowing investigators to visualize how items are positioned both horizontally and vertically.

This type of drawing typically involves projecting the three-dimensional layout of the scene onto a two-dimensional plane. By doing so, it highlights not only the spatial relationships of items on the same level but also how various objects might relate across different elevations, which is crucial in understanding the dynamics of a crime scene.

This method is particularly useful in cases where height is an important factor, such as when examining locations with varying floor levels, or when assessing the trajectory of bullets or the placement of evidence in relation to objects above or below it. The detail captured in the drawing can help investigators determine critical aspects of the scene that might be missed in standard two-dimensional drawings.