If you like, you can make a video or just use a stopwatch.

To settle our argument, we decided to set the cruise control around 70 mph and use a stopwatch.

Use a stopwatch to stay on schedule for climbing exactly four minutes.

Use a stopwatch so that you can stay on an exact timetable.

Then we solve a navigation problem, using a stopwatch and gyrocompass.

The time to the onset of meaningful pain relief was measured using a stopwatch.

Humans and lower animals time as if using a stopwatch that can be "stopped" or "reset" on command.