Uncle Ken's clock

No batteries, no quartz, just brass, steel and the laws of physics.
Two weeks ago we went to Greenwich and saw the clocks that Harrison built in the 18th century when he tried to crack the problem of a reliable timekeeper for sailors. These clocks had a human dimension, broke time into meaningful pieces. The later quartz and atomic clocks reduce time to a concept unquantifiable in human terms.
And what is time anyway, is it scalar or vector?
And what happens to it when it's used? Does it pile up behind the door to the universe or go to a cosmic landfill; can it be recycled? Is someone's wasted time another universe's useful time?
Perhaps I need to have a chat with Stephen Hawking - he'd know.