Borescopes & inspection cameras

A borescope (inspection camera) lets you see inside walls, drains, ductwork, and other tight cavities without opening them up. A flexible gooseneck reaches around bends; a rigid probe is better for straight runs. Key specs: probe diameter (smaller fits tighter holes), cable length, and camera resolution. Wireless models stream to your phone; dedicated-screen units avoid app hassles. For checking a suspected leak inside a wall or a clog down a drain line, a borescope saves a lot of needless demolition.