Practical guides to borescopes and drain cameras.
For the places your eyes cannot reach.
Format illustration: Ralcam articulating camera; this is not a photograph of the reviewed Teslong TD450S. Product listing image from our associated retail portfolio
A sideways view and a steerable camera solve different problems. Neither feature guarantees a route around an obstruction.
Understand the differenceOpening size. Working distance. The route in.
Build a shortlist around your inspection.
A clear view of a piston, casting or fastener starts with working distance. Here is how to read the image claims before choosing a camera.
A sideways view and a steerable camera solve different problems. Neither feature guarantees a route around an obstruction.
Separate the entrance, the route and the final viewing position before buying a borescope for engine inspection.
Wall cavities, insulation and hidden services need a different approach from an open pipe or a workbench demonstration.
Before choosing a phone-connected inspection camera, check the complete connection: handset, operating system, app and file export.
Length is easy to advertise. Positioning the camera, feeding it safely and bringing it back are the useful measures.
Pipe diameter alone cannot answer the question. Head length, trap shape, push-rod behaviour and the withdrawal route all matter.
A quick look into a reachable waste pipe and a recorded inspection of a drainage run have different equipment and evidence needs.
A dramatic close-up means little without a location, direction and account of what the camera could not inspect.
An articulating option reviewed along a real intake route towards a turbocharger.
A fixed front-and-side camera with published distance samples and machinery inspections.
A 100 ft push-rod system reviewed in a drain beneath a concrete foundation.
* Source-reported specifications. Product-family photographs are illustrative; confirm the exact model and revision. Unknown measurements stay unknown.
A snag on the way out. A lens covered in mud. A clear live screen and a disappointing saved image. These are the details we look for in published reviews.
Our guides separate reported specifications from observed results, and tell you what still needs checking.
How we handle evidence