It would depend on what type of frequency you are measuring.
One instrument in electric and electronic engineering would be an oscilloscope.
An oscilloscope or a frequency counter can be used to measure frequency. Oscilloscopes display the waveform of a signal and can measure its frequency, while frequency counters directly count the number of signal cycles per second to determine frequency.
A graduated cylinder or a measuring cup is typically used for measuring liquids. These instruments have marked increments to help accurately measure volumes of liquid.
When you count the number of waves per second, you are measuring the frequency of the wave. The unit used to measure frequency is hertz (Hz).
A graduated cylinder or a syringe can be used to measure 10 ml of water accurately. Alternatively, a measuring spoon that is calibrated for milliliters can also be used for measuring small volumes of liquids.
An instrument is a device used for measuring or monitoring a particular quantity or level, while a gauge specifically refers to a device used for measuring pressure or depth. In general, an instrument has a broader application, encompassing various types of measurement devices, while a gauge is more specialized in its use.
Force meter is the instrument used in measuring force.
An oscilloscope or a frequency counter can be used to measure frequency. Oscilloscopes display the waveform of a signal and can measure its frequency, while frequency counters directly count the number of signal cycles per second to determine frequency.
Weston frequency meter is a type of electromechanical instrument used for measuring the frequency of an alternating current (AC) power system. It typically consists of a moving-coil meter mechanism that reacts to the frequency of the AC signal to provide a reading on its scale. Weston frequency meters are used in various applications to monitor and analyze the frequency of electrical systems.
An instrument used for measuring a quantity of something is called a measuring device or a measuring instrument. Examples include a scale for measuring weight, a ruler for measuring length, or a thermometer for measuring temperature.
Frequency counter
A clock
Photometer
micrometer
It is an instrument for measuring time
A protractor
A thermometer
A scale