Both borescopes and endoscopes are types of visual inspection tools used to look inside objects that are otherwise difficult or impossible to see. The main difference between the two is their design and application.

A borescope is a type of inspection tool that is specifically designed for looking inside narrow and deep spaces such as pipes, engines, turbines, and other mechanical or industrial components. Borescopes usually consist of a long, thin, flexible or rigid tube with a camera at one end, and a viewing screen or eyepiece at the other end. They can also have additional features such as LED lights for illumination, articulating tips for better control, and zoom capabilities for more detailed inspection.

On the other hand, an endoscope is a medical device used for visual inspection inside the human body, typically through natural openings such as the mouth, nose, or rectum. Endoscopes can be used for a variety of medical procedures such as colonoscopy, bronchoscopy, gastroscopy, and cystoscopy. Endoscopes also typically consist of a long, thin, flexible or rigid tube with a camera and lighting system at one end, and a viewing screen or eyepiece at the other end. However, medical endoscopes are designed with different features such as sterile materials, disposable components, and specialized tools for surgical procedures.

In summary, borescopes are used for industrial inspection while endoscopes are used for medical purposes. Both types of instruments use similar technology and have similar functions, but the specific features and applications are different.