timer

One who keeps track of time; a timekeeper.

A timepiece, especially one used for measuring and signaling the end of time intervals, as on a stove.

A switch or regulator that controls or activates and deactivates another mechanism at set times.

A device that controls the timing of the sparks that ignite the fuel in an internal-combustion engine.

One who keeps or measures and records time; a timekeeper.

A form of stop-watch for recording or indicating short intervals of time.

A timekeeper; especially, a watch by which small intervals of time can be measured; a kind of stop watch. It is used for timing the speed of horses, machinery, etc.

In electric ignition, an adjustable device for automatically timing the spark.

Someone or something which times.

A device used to measure amounts of time.