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stopwatch
Instrument that precisely measures time in minutes, seconds and fractions of seconds.
minute hand
Metal needle that indicates minutes on a dial graduated from 0 to 30 minutes.
second hand
Metal needle that indicates the 60 equal divisions (seconds) of a minute by moving in small jumps.
1/10 second hand
Metal needle that indicates the 10 equal divisions of a second on the dial.
ring
Round part for holding or hanging the stopwatch.
case
Outer covering that encloses and protects the device’s mechanism.