What Is a Borescope and How Does It Work? (2026 Guide)

If you have ever needed to see inside an engine, behind a wall or down a drain without taking anything apart, a borescope is the tool that does it. This guide covers what a borescope is, how it works, and how to pick one.

How a Borescope Works

A small camera and ring of LEDs sit at the tip of a long cable. You feed the cable into the space you want to inspect, and the LEDs light the darkness while the camera sends live video back to a screen or phone. Better units add a steerable, or articulating, tip so you can look around corners instead of only straight ahead.

The Main Parts

• Camera tip: captures the image. A smaller tip fits tighter spaces; higher resolution shows more detail.
• LED lighting: illuminates the cavity. Adjustable brightness avoids washed-out or too-dark images.
• Cable or probe: flexible, semi-rigid or rigid. Semi-rigid holds its shape so the tip goes where you point it.
• Display: a built-in screen, or a WiFi or USB link to your phone.
• Articulation: on premium models, a tip that bends on command to see around bends.

Where the ROVE RS2 Fits In

The ROVE RS2 is a two-way 210 degree articulating borescope with a 6.2 mm probe, a 1.6 m semi-rigid gooseneck, a 1080p Full HD camera, and a 4.3 inch built-in screen, so it works with no phone or app. Its two-way articulation and slim probe suit automotive, plumbing, HVAC and home DIY inspection, and because it needs no app it is ready to use straight out of the box.

Frequently Asked Questions

Is a Borescope the Same as an Endoscope?

They overlap. Endoscope usually refers to medical use, while borescope refers to automotive, industrial and DIY inspection. In everyday shopping the terms are used interchangeably.

Do I Need an Articulating Borescope?

If you inspect around corners, inside cylinders or behind obstacles, a steerable tip is worth it. For straight, open views a fixed tip can be enough.