I can think of a lot of uses for this, but it is in end effect a two watch movement timing device (one drives the system on if the other fails, or both tick happily together) matched to a mechanical spring loaded lever which activated an electric switch when the time's up. Each movement is a 13 jewel, lever escapement. If nothing else it makes a great paperweight with the comforting sound of two simultaneously ticking movements - or a great 120 hour egg timer (bell and battery not included). Link at:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=537853562