Yes, he really means 150 watts Len. I guess you missed his other thread where he was talking about re-gassing a bunch of CO2 lasers.
150 watts might be high for a visible light laser, but it's nothing for a CO2 laser; depending on the model, they go into the KW. (Although for the sealed-tube, electrically-excited glass units he's working with, 150 watts is on the high end.)
Back on topic: I'm curious about the estimated final cost of one of these meters...
Adam