Hourglass (EM)

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An hourglass is an instrument used to measure the passage of time. It consists of two bulbous glass globes connected by a narrow passage. Sand passes from the topmost bulb, through the narrow section, into the lower globe. These globes are held together by a wooden frame that is itself held together by twine and screws, or nuts and bolts.
==Magic Hourglass List==
Category:Encyclopedia Magica