Even for DIYers with excellent eyesight, there are barriers that can’t be seen through—at least not without a borescope. A borescope is essentially a tiny camera on the end of an arm that can ...

If you want to look behind a sink, into a car engine or somewhere else when you're working on it, a borescope (a lot of people say 'endoscope' but that's a more medical term) is the way to go.