[Amps] Volt-watt meter

[kenw2dtc]

"I have a Simpson volt-watt meter here I'm thinking about getting 
calibrated."

Perhaps you could get one of your larger variacs and put in a smaller fast 
blow line fuse, then slowly bring up the voltage on some kind of a load. 
Keep taking readings until the fuse blows.  Wouldn't the fuse rating times 
the input voltage on the variac be your relative watt reading?

OR:  put the fuse on the load side and do output calculations if you think 
that would be more accurate.

73,
Ken W2DTC