This glasses frame inspector uses computer vision technology to measure the geometry of eyeglass frames. The device is equipped with a stereo camera that shoots the frames from different angles, producing a complete 3D image. It helps eyewear suppliers compare the frame with the client's prescription, reducing inspection time from 10 minutes to 10 seconds and boosting precision from millimeters to micrometers. Conventional eyeglass inspection relies mostly on optics and mechanics. This device marks the first use of computer vision technology for this task to bring ultra-high precision to the process.