They used sundials. From this knowledge they were also able to devise tools for divisions of time eg hourglasses.
no you use a stopwatch to measure elapsed time.
Do you mean like a watch?
To measure temperature, scientists use:KelvinCelsiusFahrenheit.
A clock, a watch, a sundial
I suppose if your stop watch doesn't accurately measure time or has limit on the length of time it can measure it might be bad. Otherwise it would be an accurate measurement of the length of a movie.
A stop-watch does the job nicely.
The item used to measure time worn on the wrist is called a wristwatch or simply a watch.
Scientists observe the night sky for bulges or distortions in the light emitted by galaxies. These bulges are caused by the gravitational influence of massive objects such as black holes, which can reveal important information about the structure and evolution of galaxies.
Scientists use seismographs.
Scientists use sound waves to measure the depth of the ocean through a method called sonar. By sending sound pulses from a ship to the ocean floor and measuring the time it takes for the sound waves to bounce back, scientists can calculate the depth of the ocean at that location.
gramsWHAT
scientists use fajita scale to measure hurricane intensity