If you deal in used firearms, long guns require a boroscope to inspect the inside of the barrel for defects. The 3.5 LCD 3.9MM Camera Video Inspection Endoscope Pipe Car Borescope 180° Rotation device gives enough detail and is small enough to fit in a .22 caliber rifle barrel. I have had some disagreement as to the image quality of this device. I find it more than adequate to spot even hairline cracks. But my Dad doesn't agree. I don't know what to say about that. Part of beauty is simplicity. And this device is very simple to use. I just unpacked it, installed (4) AA alkalines (not included), and started using it! It's not essential that everyone have something like this, but it's a great inspection tool with endless applications. The tip is so small--the smallest I've found--it will fit practically everywhere. The 3.5 LCD 3.9MM Camera Video Inspection Endoscope Pipe Car Borescope 180° Rotation appears well-made and durable. The image quality is superb for such a small camera. The LED lights are more than adequate. You don't need to turn them all the way up. The focusing distance is automatic. It your looking at something five inches away from the tip, it automatically adjusts. But the focusing distance is short on this type of device. I'm pleased with the results I've gotten. I can recommend this product for medium-duty, personal use.Read full review
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