Coordinate measuring machine (CMM) is used to measures the geometry of physical objects by sensing discrete points on the surface of the object with a probe. This machine may be processor controlled or physically controlled by a machinist. The dimensions are defined by a probe attached to the third affected axis of this mechanism. Probes can be automatic, white light, optical, or laser, among others. The typical "bridge" CMM is assembled from three axes, an X, Y and Z. These axes are orthogonal to each other in a normal three-dimensional cohesion system. Each axis has a level organization that indicates the position of that axis. A coordinate measuring machine (CMM) is also used in the manufacturing process to test an assembly or division against the design intent by use of video measuring system. By accurately recording the X, Y, and Z coordinates of the target, points are generated that can be analyzed through regression algorithms to build features.
Curious systems for micro-scale video metrology application is another emerging area where metrology machines are used. There are many commercially obtainable coordinate measuring machines (CMMs) whose systems include a microprobe, many specialized systems in government