Personally, the first thing is the clarity of the image, and the second is the speed of imaging, because the two are directly related to the work efficiency. Olympus, as I know, is a well-known industrial endoscope brand, which owns a variety of high-definition products, including IPLEX NX, IPLEX Gair, IPLEX GXGT and so on. These products are widely praised for their simplicity, accuracy and durability. They can not only be used for routine inspection of drilling holes, pipes and cavities, but also can handle other challenging inspection tasks and provide excellent inspection results.