There are four different types of borescopes for sale. Each one can assist you in seeing the tiniest, most intricate details, or help you explore the inner workings of things you cannot get into on your own. Their differing abilities add a new dimension or use when your job involves audio visual repair.
The Rigid Borescope
This type of borescope is the one from which all other borescopes originated. The ocular viewer stretches out at a ninety degree angle and can only see inside something as far as the slender viewer can reach without getting stuck or bent out of shape. If you only plan to view exposed audio visual components and not buried components within the same compartment, then the rigid borescope is the one you want to use.
The Articulating Borescope
Similar to a flexible borescope, the articulating version of this device has both rigid and flexible components. It allows you to set the rigid parts at certain angles and then utilize the flexible sections to maneuver or navigate through tight spaces. The rigid sections support the rest of the scope and keep it from ending up in the turbines of an engine or the grinding gears of smaller pieces of industrial equipment. You do not have to continually provide physical support for this scope, since the rigid sections take care of that for you.
The Flexible Borescope
The long, slinky, snakelike scopes of this type can go absolutely anywhere inside a machine without ever taking the machine apart. It is most useful for seeing inside machines where space is at a premium and the openings inside the machine act as the manual guides for the scope. Its one downside is that it can be very floppy and hard to maneuver since you cannot put your hand into the machine to lift the borescope into the areas you want it to go.
The Video Borescope
Very similar to the endoscopes doctors use to view inside the human body without cutting the body open, these borescopes are often used to peer into pipes or drains. Plumbers use them to find the source of unseen clogs and record what they see so they can analyze the clogs and figure out the best approach to remove them. The video collected by this type of scope is transmitted to a computer screen in real time and provides bright, easy to see images that you cannot get with any other borescope.