as you probabaly know, thats a Infrared temp gun. it guages the temp at the exact point that the red dot is. as posted before, the other type measures the ambient temp.
IMO, these IR temp guns are the best for geting a acurate temp on point "X".
i dont have one, but would like one.... on the other hand, i have a PE1, and it does all i need.
spooky