Like sands through the hourglass...

Hourglasses are one of the earliest known methods for keeping track of time.  They were both consistent and reliable, and unlike systems that relied on the sun, they could be used anywhere and everywhere.  With this in mind, some of us decided to explore the design and construction of our very own hourglasses.  Measuring from as little as six seconds to as much as three or more minutes, there was a great deal of careful trial and error involved in the construction of these homemade timekeepers.