Industrial borescopes include both rigid borescopes and flexible borescopes. The difference is that borescopes are rigid lens systems, while fiberscopes are flexible endoscopes that transmit the image via optical fibers instead of lenses. Thus, rigid industrial endoscopes are more robust and durable. Fiberscopes, on the other hand, are more flexible and can be much thinner. There are even fiberscopes with articulatable tips.