Answer:
What measures out time until in time all is smashed to it?
Iron roof, glass walls, burns and burns and never falls.
A dagger thrust at my own heart, dictates the way I'm swayed. Left I stand, and right I yield, to the twisting of the blade.
Sleeping during the day, I hide away. Watchful through the night, I open at dawn's light. But only for the briefest time, do I shine. And then I hide away. And sleep through the day.
Craig died in Florida. Shortly after, Tracy died at sea. Nobody mourned, In fact, everyone was absolutely delighted. Why?
You use it between your head and your toes, the more it works the thinner it grows.