Officials say 3D mapping can create scaled measurements of the entire site. Unlike traditional methods, this approach doesn’t just capture length and breadth — it also records height, giving a complete three-dimensional view of the building and its surroundings. According to an officer, a draftsman, who is part of the crime team that visits the spot after an incident, takes measurements in a notebook. Later, with the help of drafting equipment and AutoCAD — a computer-aided design software — a map of the crime scene is prepared. How will this help? In the Vivek Vihar case, an officer said that it can help provide details such as the floor and the location where the fire may have started in the multi-storey building. It can also provide possible details about objects and obstacles present in the room during the fire. The technology helps map burn patterns, collapsed structures, stairways, windows, wiring, gas cylinders, AC or gas pipelines, making the fire’s progression easier to reconstruct.…