Use this $18 USB borescope for looking in walls, or other tight places

I have been looking for something like this for a few little projects.

  1. 2.2 MP though is really not very good. I got that USB microscope BB recommended. And for the price I like it, but wish it has at least 5MP.

  2. If you scroll down it looks like they have the same thing for $5 cheaper.

  3. Anyone know what the OD of the camera is? If it would work for a bore scope for a .22" barrel, I might pull the trigger on it. .30" might be acceptable.