I did buy a usb camera from ebay so that I could look under floorboards etc. but I don't know what I have done with it and besides, my laptop is broken at the moment (battery dead and the power socket does not make reliable contact withy the plug; I assume the contacts have worn with age).
I was wondering perhaps a camera with a built-in screen would be better. Has anyone bought one of these? I'm looking for something cheap as it will only be for occasional DIY use. Is there anywhere to buy them from other than ebay? The ones on there only seem to be 1m long. Is that all that is needed Do they focus further away? I was thinking if you went under the floor from one side of the room to another that perhaps a longer one would be more useful?