Hourglass

+The **hourglass** is an ancient [device](/wiki/device) that measures the passage of [time](/wiki/time) by the regulated flow of sand. Its elegant, symmetrical form, with two connected glass bulbs, beautifully symbolizes life's fleeting moments and inevitable progression.

+## See also

+- [Clock](/wiki/clock)

+- [Timer](/wiki/timer)

+- [Sand](/wiki/sand)