Measuring wow and flutter of a phonographic turntable with digital equipment
Wow and flutter is a phenomenon of frequency modulation. Human ear is sensitive to instantaneous frequency deviation in the range of 0.1Hz ~ 200Hz. The frequency deviation from the carrier frequency can be shown on a FFT analyzer, provided that the FFT frequency resolution, which is equal to SamplingRate/FFTSize, is enough. Quantitative measurement of wow and flutter requires FM demodulation (see https://www.researchgate.net/publication/344437920_Wow_and_Flutter_Measurement_using_Multi-Instrument)
A frequency meter measures the average frequency not the instantaneous one and thus is not able to reveal the wow and flutter. It can only measure the frequency drift.