The MicroFlex GenScope from GenScope are Borescopes that has a field of view of 70 deg. They have a diameter of 0.5 mm - 4 mm and length of 0.25 m - 2 m. These borescopes have an interchangeable focusing eyepiece and a USB camera. They have a quartz-fused fiber optical guide and are housed within a durable plastic composite or stainless-steel sheath. These borescopes are ideal for use in small, curved passageways such as turbine blades, medical devices, fuel injection systems, hydraulics, injector nozzles, compressors, and tubing applications.