I'm not too happy with this, the colors seem iffy to me.
Texture sheets:
http://img529.imageshack.us/img529/2506/wellmapsic9.jpg
It's made entirely from heavily modified photo textures and an AO overlay. I spent most of the time tweaking or editing the photo textures until I got something I liked. I didn't have enough time to do the turn and crank thing so I just left it as a blank metal.