In Mission:Impossible (the first of the Tom Cruise films) the wrist mounted decibel meter he wears whilst being lowered into the ultra-secure chamber beeps to denote the level of noise it’s detecting. It has the coloured bars too but it actually beeps – I couldn’t find a clip of the scene but about 23 seconds into the trailer you can see and hear it beep.

What now?

Why would you create a device designed to measure noise, for the precise purpose of aiding noise minimisation, and then have it beep? It makes you wonder what else the IMF are cooking up.