The web camera is a Micro Innovations model IC435C, It is available at a lot of the big computer stores, I got mine at a CompUSA.
I just got lucky with picking this camera to modify, the construction of the housing is perfect for mounting it to a shaft and you can get incredibly close to the object with its focus range.
The only modification is opening it up and drilling a small hole in the back to mount it to your shaft, and one other thing I did was to cut off about 3/16 of the lens hood, this is to allow you to get closer to your stock or what ever you are focusing on.
Interesting thing after I had mine mounted and checking it out, I was out on Ebay and found a guy who is selling the exact same camera on a shaft with a little flexible arm led lamp, for $159.