Designed for inspection in hard-to-access areas, Model TFS4-720 offers high-resolution 17,000 optical fiber imaging bundle with capability of twisting image bundle via 90 deg mirror tip, which allows 360 deg view of interior. Unit is waterproof with oil- and fuel-resistant sheathing, multicoated optics, and 1.25 W LED battery handle for illumination. Measuring 0.17 in. in dia, borescope offers flexible length of 28.35 in., 45 deg field of view, and focal length of 0.2 in. to infinity.