3D laser scanning is currently used in the vast field of engineering including but not limited to fitness-for-service, design verification, site planning, BIM, reverse engineering, as-built modeling and retrofit projects.
3D laser scanning is widely used for construction projects for dimentional verification, geometric evalution, deformation monitoring, large volume calculations, measurements of large or distant objects and unsafe structures for integrity assessment.
3D laser scanning is also used for modeling, forensic application, virtualization, reconstruction, restoration, quality control and record keeping.
It has become popular with many hobbyist for many DIY projects which was not possible before.
With 3D printing and 3D scanning anyting can be replicated with high accuracy.