I have never heard of any type of camera such as this one. The fact that it can be used in smaller opening to take photos of things that we cannot see with our naked eye is astonishing! In my opinion, I think that this camera is going to come in handy for a lot of DIY contractors that need this thing to peer into cavities that they would otherwise not be able to see.
Read more: Extech Introduces Minimally Invasive Video Inspection Camera