A small version of an hourglass used to time the boiling of an egg.
An hourglass mouse pointer.
A timer that can be set to sound an alarm after a certain amount of time; a kitchen timer.
A sandglass.
An item of glass laboratory equipment consisting of a simple, slightly concave circle of glass. It is a general utility item, used to hold small samples, to evaporate liquids, to cover a beaker, and so on.
The glass covering of the face of a watch.