A seismometer (replacing the outdated term seismograph), but other instruments may also respond to an earthquake. The simplest example of a seismograph is a pendulum.
A volt meter
A ruler or a measuring tape.
Pressure gauge or tachometer.
Pyrometer
instrument for measuring sound was named after which scientist?
There is no single instrument as there are different types of natural disasters with different things that can be measured. Anemometers, barometers, and rain gauges can measure wind, pressure and rainfall in storms. A seismometer can measure the intensity of a earthquake.
Electrical current can be measured with an Ammeter. The units used are amps.
A measuring instrument used to measure voltage,current,resistance values... As it is using for multiple purposes, the name multimeter is givem to that instrument....
There is no particular instrument used for measuring tornado intensity. Ratings are based primarily on damage assessment. Occasionally doppler radar has measure wind speeds inside a tornado, but such measurements are rare.
A seismograph is used to measure earthquakes according to the richter scale
Meter is the general name for any measuring instrument. Such as an electricity meter, or an odometer on your car. But if you mean the metre as in measuring systems, then surveyors, mountaineers, engineers, and so on.
A name of a measuring item used in science is MEASURING CUP