Pat Conkle was a retired machinist and he created this amazing display of gears, levers, cams and pistons in his shop while his wife, whose health was failing, sat nearby. They were able to spend this time together as he built some very impressive mechanisms that can be appreciated by anyone, though the more technically inclined you are, the more you'll see.
Watch the video below to see this display in action and pay attention because there's a lot going on. Toward the end of the video there's a pretty sweet part of this display with a series of cams that makes a fun series of sounds as it runs.
This display is now all together and running through the efforts of Pittsburg State’s Kansas Technology Center and Pitsco Education.
via Make Magazine