![Lovestruck :lovestruck:](./images/smilies/yahoo_smilies/lovestruck.gif)
Anyway, I've found a few old instructional videos that use larger-than-life models to get across the operating principles of two of my favorite sets of mechanical devices. I'm particularly fond of the model approach to teaching these subjects, as it shows you the operation of a complex system in real time; something no amount of pictures can do. I tend to think it even has a bit of an edge over CGI models.
This one from the Hamilton Watch Co. explains the inner workings of a mechanical watch (perhaps of interest to our clockwork enthusiasts?)
http://www.youtube.com/watch?v=cZwq1KL4SD0
This one from the Army Signal Corps (1945) explains the basic mechanisms of single-action firearms:
http://www.youtube.com/watch?v=NZX7X3pJgH8
While this (part II of the above) adds to the model in order to explain the three types of automatic firearm actions:
http://www.youtube.com/watch?v=GgF0X1zjLNY
Those latter two are by far the most easily comprehensible explanations of firearms actions I've ever seen; despite long familiarity even I learned a thing or two.