Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com> I found a Weston analog Watt meter (0-2 & 0-4kW) at a ham fest some time ago and have yet to try it. There are a pair of terminals for load voltage and another pair for load current sensing. My question is - will this read true watts with a reactive (i.e. Tesla coil) load? Thanks, Gary Lau MA, USA