Most of the things about nature that a scientist might wish to study cannot be seen or touched or heard or sensed with the scientist's own hands or senses. Depending on what kind of scientist it is the things can be too big, too small, too fragile or even too dangerous. Except for mathematicians and theoretical scientists almost all scientists must use tools.
their tools and observations.
Scientist use the same tools because, so their measurements will be the same.
Binoculars
hydrophone
poo h
what tools arte generally used for rocket science
The tools that a scientist would use to conduct an experiment would vary greatly on the nature of the experiment.
a seismograph
a telescope.
they uses the tools of art that is created by the scientist
Barometers, Anemometer, Thermometer
They use a variety of tools such as a highly complex microscope, telescope or something as simple as a ruler and piece of string, the tools depend entirely on the experiment.