whisky-dave wrote:

I have maplin versions at home and at work, they have always been OK
for such things and pretty much given me the info I needed.

I have a Maplin one, I don't think it claims to measure true RMS, but it
does allow toggling between W and VA, it's measuring my PC's consumption
now at 35W and 58VA.

n.b. that isn't on direct mains, it's between the PC and a UPS which is
running in buck mode at the moment, so not likely the sineyist of sine
waves.