|GCSE Measure Current Frequency Meter Logic Probe Multimeter >Oscilloscope< Power Voltmeter|
Oscilloscopes are used to measure time, voltage and wave shape. By calculation, frequency can be measured too.
Try This Oscilloscope Simulation by Nick Reeder
In this image the peak voltage is 4 Volts and the wave period is 1.3 ms. The frequency = 1 / 1.3ms = 770Hz.
This is a fairly typical example of a complex measuring instrument. Top end instruments cost £20 000!
Top end USB oscilloscope can be expensive but there are many capable budget models like this one which doubles up as a signal generator.
Here is a Picoscope screen display - photoshopped after capturing the wave shapes.
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