Unless you have X-ray vision, it can be tough to figure out what's inside a wall
. That's where a 'borescope' comes in handy. It's basically a small camera on the end of a snake. You just fish it through a hole or tight space to view what's inside on a video monitor.
Several companies make borescopes, but the General iBorescope
line is a little different in that it lets you use the display on your smartphone or tablet as a wireless video monitor. The borescope acts as a Wi-Fi hot spot, letting you connect your mobile device to it without a Wi-Fi router or Internet access. A free app lets you snap photos and record video, and the camera is waterproof so you can safely use it in areas that may be wet. Before removing a all, you need to know what's inside.