对中仪根据具体应用分成三大类：轴对中仪，几何对中系统，孔对中系统轴对中

On the instrument depending on the application into three categories: <br>axis of the instrument, the geometry of the system, the system of the hole <br>axis of the instrument; mainly used to detect and concentricity deviation angle of deviation of connected devices, such as wind turbines, pump drive shaft and the motor, compressor, centrifugal compressor, etc. these devices. <br>Hole alignment system; mainly deep bore or a porous concentricity on industrial equipment, such as steam turbines, internal combustion engine crankshaft bore, cylinder, extrusion machinery. <br>Geometry on the instrument: <br>the geometry of the system; the geometry of the application system is the most widely used for mainly measuring flatness, flatness, smoothness, straightness, parallelism, perpendicularity. For use in machine tools, machining centers, paper, printing, film line, rolling mill installation and maintenance checks, aircraft, rockets, missiles, helicopters assembly, water cutting or laser cutting machine for the installation and maintenance.

The instrument is divided into three main categories according to the specific application:<br>Axis-to-center instrument, geometric pair system, hole-to-center system<br>Shaft-to-center instrument, mainly used to detect coaxial deviation and angle deviation of connected equipment, such as wind turbines, pumps and motors, compressors, centrifugal air compressors and so on the driving shafts of these devices.<br>Hole-to-medium system; mainly to measure deep or porous concentricity on industrial equipment, such as turbines, internal combustion engine crankshaft holes, cylinders, extrusion machinery.<br>Geometric pair: The application of geometric pair system is the most extensive pair, mainly measuring flatness, flatness, straightness, parallelism and verticality. Used in machine tools, processing centers, paper, printing, film assembly lines, rolling mills installation and maintenance inspection, aircraft, rockets, missiles, helicopter assembly, water cutting or laser cutting machine installation and overhaul.

Centering instruments are divided into three categories according to specific applications:<br>Shaft alignment instrument, geometric alignment system, hole alignment system<br>Shaft alignment instrument is mainly used to detect the coaxiality deviation and angle deviation of connecting equipment, such as the driving shaft of wind power generator set, pump and motor, compressor, centrifugal air compressor, etc.<br>Hole centering system: mainly used to measure the concentricity of deep holes or holes in industrial equipment, such as steam turbine, crankshaft hole of internal combustion engine, cylinder and extrusion machinery.<br>Geometric aligner:<br>Geometric alignment system: geometric alignment system is the most widely used alignment system, mainly measuring straightness, flatness, straightness, parallelism and perpendicularity. It is used in machine tool, processing center, paper making, printing, film assembly line, steel rolling plant installation and maintenance inspection, aircraft, rocket, missile, helicopter assembly, water cutting or laser cutting machine installation and maintenance alignment.<br>