ISO 10110-7 is the specification of surface imperfection tolerances for optics and optical instruments.
　　The scale comparison plate of standard defect represent directly grade number and size of optical surface defect, and is normally used by inspectors to avoid difference between individuals and inspection conditions to effect their discretion, which will cause waste and increase cost.
　　The scale comparison plate of standard defect will improve your efficiency of inspection and reduce your cost of production.
　　The scale comparison plate of standard defect is applicable for process control of quality in polishing, centering, coating, cementing and mounting optical component.
　

Specification for surface defect:

　　Shanghai Fairy Optical Technology Co., Ltd process the scale comparison plate of standard defect for inspection of optical surface, which conforms to the Military Standard of The United States: MIL-O-13830A