A stop clock, commonly called a stopwatch, is a lab instrument used to precisely measure time intervals. It is made up of a compact, portable gadget with a clock mechanism inside of it that can be started, stopped, and reset using buttons or other controls.
Some stop clocks might also have extra characteristics, such the capacity to record several time intervals or the ability to show the amount of time that has passed in various time units (like seconds, minutes, or hours).
In scientific studies and other situations requiring exact timing, such as in manufacturing, cooking, and athletic training, stop clocks are frequently utilized. They are additionally employed in academic contexts to instruct students in measurement, timing, and experimental design ideas.