I was searching on Google for the snorkel lens which Norm uses on some of Tested videos (the one I remember happens to be the Adam Savage's Overlook Maze Model video - 20:41 is the timestamp) but I couldn't find anything close to it other than some lens systems for video cameras. Norm uses it on a DSLR, I think it's Adam's lens.
Does anyone happen to know what lens it is and where can I find it?
@Rageworks: Try endoscope camera
I was searching for the same, and this was the top hit on google. Heh. With some more poking I think it's technically a "relay" lens. One I found was the laowa 24mm relay macro lens.