I've calibrated and repaired electronic test equipment for the Air Force for twenty years now. My favorite multimeter is the Fluke 77. I cary a Fluke 75 with me at all times on the Wing. Flukes newest model is the 170 series.
I like the old 77s because of their ruggedness. After watching the abuse Air Force maintainers dish out to these, I will never go with another. Yes, they cost a LOT more, but will take almost any abuse and still give good readings.
The Craftsman unit listed here is fine but not even in the same class as the Fluke.
Fred H,
You are simply lost in gadget fever!! That thing is for testing power on three pahse systems. You know, the ones they use to power industrial buildings! The last time I looked, the GL1800 doesn't use three phase 400Hz.