Reply to "Digital AC Voltmeter/Ammeter?"

For AC, there's no inexpensive solution.  If you're using anything other than a classic postwar Lionel or AF transformer to power track and set train speed, you need a true-RMS indicating instrument, which necessitates appropriate electronics driving an analog or digital display.  An integrated device will cost three figures easily.  Panel meter production has plummeted over the past 50 years, so even a basic AC meter for use with, say, a ZW and Pullmor-motored engines, takes some searching to find.