X-ray automatic orientation instrument is a kind of accurate device which deigned integrates light, mechanical, electrical into one body according to X-ray diffraction principle, it can fast measure crystal direction of natural and artificial crystal(including piezoelectric, optic, laser, semiconductor), it can also use with cutter, grinder and other equipments. YX series X-ray orientation instrument is necessary device for precision process and manufacture crystal component, it can be used for orientation of all kinds of crystal and is broadly used in crystal material processing industry.