Borescope

Borescopes are used for visual inspection work where the target area is inaccessible by other means, or where accessibility may require destructive, time consuming and/or expensive dismounting activities.

It is also known as a fiberscope and can be used to access cavities which are around a bend, such as a combustion chamber or "burner can", in order to view the condition of the compressed air inlets, turbine blades and seals without disassembling the engine.

Some high-end borescopes offer a "visual grid" on image captures to assist in evaluating the size of any area with a problem.

The ability to control the light at the end of the insertion tube allows the borescope user to make adjustments that can greatly improve the clarity of video or still images.

Rigid borescopes are therefore better suited to certain tasks such as inspecting automotive cylinders, fuel injectors and hydraulic manifold bodies, and gunsmithing.

The end of the insertion tube includes a light which makes it possible to capture video or still images deep within equipment, engines and other dark spaces.

Later models offered improved features, such as better resolution, adjustable illumination or replacing the built-in display with a computer connection, such as a USB cable.