Answer:
My life can be measured in hours, I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
I am a span of time you can always see through I am also the timepiece with the most pieces. What am I?
What measures out time until in time all is smashed to it?
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.