I've found this Borescope so useful on just about everything! I've used it on my car and truck, sometimes just to locate bolts or tools I've dropped. You can even tape a magnet on the end to retrieve nuts and bolts you've dropped in hard-to-reach places in your car or truck. Find wires or read fuses under your dash. Tape a string to it to run wires behind your dash to pull a wire you may need to run for a dashcam. I've used it to look behind heavy furniture to see if something I was looking for fell behind. I've used it in my Boat to locate where the oil pan drain was located and under the hull to view the condition. I've used it on my boat to locate a place to run cable to install a fish finder. This is so easy to use, just power on point and take a picture if you want to review it later.