Greetings, Well, I finally got a (not really a)VOM and used it to measure the inductance of the 400Hz 10A 3ph. variac core this morning. I measured 69.984542848319856 mH. The problem is that the last significant digit kept changing. I think I'm going to return the meter -- it's not stable :-) Seriously, it works great and displayed a value of about 70 mH. I hope the value is high enough. I've been reading about values in the 300mH range. Chip