A Contour Measuring Machine (or Contracer) is a high-precision, industrial metrology instrument used to analyze the 2D or 3D profiles, shapes, and radii of machined parts using a stylus-based tracking system. These machines measure surface coordinates by tracing parts—such as gears, bearings, or nozzles—and evaluating parameters like linear distance, angle, radius, and roughness to ensure conformity to engineering specifications