Dimensional and profile scanners gather two-dimensional (2D) or three-dimensional (3D) information about an object. They use several different configurations and technologies. Coordinate measuring machines (CMM) are dimensional and profile scanners that move a measuring probe to determine coordinates of points on a workpiece surface. CMMs consist of four main components: the machine itself, the measuring probe, the control or computing system, and the measuring software.  Photogrammetry is a dimensional measurement method that uses geometry, mathematics, and physics to create 3D coordinates from 2D still-pictures. Videogrammetry is a noncontact measurement technique which applies geometry and mathematics to images from video cameras in order to determine the 3D coordinates of objects. Both 2D scanners and 3D scanners can use optical or laser-based methods to capture information about an object; however, 2D dimensional and profile scanners cannot account for object’s depth.