The clock(clock.blend) is meant to be imported and used in the scene quickly and simply, to move, rotate and scale use the bone(clock control) above the clock.
In the file there are two script:
-select hour, to choose the hour or read it from pc
-rope center, to center the rope after scale(clock control) the object or after choose the hour
the rope centered fall for 44998 frame (25frame=1sec,45000=30min), after 44998 frame the wheight go back to the top.

there isn't texture, all material are procedural.
there is audio file(2000frame)
tested in Blender 2.78