Longwei TVT-322 Dual Channel dual needle AC RMS Milivolt Meter performance review

This is a performance review of two millivolt analog meter. One great meter from 80’s a Kikusui 1831 AC Voltmeter 2-Channel Dual Needle meter and one you can purchase new today the Longwei TVT-322 Dual Channel Milivoltmeter Double Needle Millivoltmeter. Do a voltage accuracy test and a frequency response test of the two meters.

[@andilowe9526]

Ein bißchen zu lang. Wird noch gezeigt, ob die Möglichkeit besteht, das 322 zu kalibrieren?