Q: I would like to connect a USB borescope/ inspection camera

Won't work.

Using The iPad Camera Connection Kit

http://support.apple.com/kb/HT4101

Secrets of the iPad Camera Connection Kit

http://howto.cnet.com/8301-11310_39-57401068-285/secrets-of-the-ipad-camera-conn ection-kit/

 Cheers, Tom

These products will work on iPad, iPhone etc.

http://www.oasisscientific.com/flexible-inspection-camera-for-iphoneandroid.html

Did you have any succes on doing this, what BSI brand are you using?

We have developed a tool to records pics from PC but would be great to take snapshot of what is display on BSI

check this https://www.youtube.com/watch?v=6hyaaejGBc0

Did you ever get this figured out? Note I am trying to do similar. Please see my post here:

How to use external USB Camera on IOS iPhone 6?