How does a click torque wrench work?

I've had to impulse to take mine apart a number of times... But, I found this today, and really enjoyed it -- thought it was worth sharing for the fellow must-know-how-it-really-works folks. (even has a cut-away in action )

http://www.tegger.com/hondafaq/torque_wrench/index.html

Neat find!!

Craftsman Brand

Had the same thing happen to my Craftsman torque wrench, (nuts loosened up) and I had to recycle it. Learned not to buy another Craftsman, went with another el cheapo brand with different design.