This is a professional 3D coordinate measurement tool designed specifically for iPad, developed using pure Swift. Its features include: coordinate input and management: support for manually entering 3D coordinate points, each point can have a custom name and coordinate value, and support for batch import and export of data. Geometric measurement calculation: Built in multiple measurement functions, including distance between points, angle measurement, positional tolerance, flatness, roundness, cylindricity and other professional geometric parameter calculations, simulating the measurement capabilities of CMM (Coordinate Measuring Machine). 3D Visualization: Provides an intuitive 3D coordinate point visualization interface, supporting gesture operations for rotation, scaling, and translation, helping users better understand spatial geometric relationships.