For JP and other machinists...
 

As well as anyone else fascinated by things mechanical.

I stumbled across this video on the building of jet engines by RR.

The tolerances of some of those parts are incredible given the size and temperature ranges.

Anyway, it's an hour of your life, but I think you'll enjoy it, assuming you haven't watched it already. ;)

Documentary Rolls Royce - How To Build A Jumbo Jet Engine - - YouTube


SIDE NOTE: at about the 43 minute mark they are talking about their engine monitoring systems which are part of the "ping" data in the MH370 tragedy.