Perry another good way to check for cracked skillets is just to watch the what I buy on EBay!! They come to me by the dozen!!
That is pretty sage advice from an old knowledgeable butcher ;D ;D ;D
I also always carry a flashlight with me when I go junking.
HEY YOUNG PUP ;D
Now what does carrying a flashlight got to do with what I said? ;D
Also, now listen up here, since you got that College Degree you're supposed to be smarter. ;)
Clark Rader has got the hot tip, he's got a flashlight, one of them slender ones, and its a regular flashlight, and a black light, and its got a magnet on it. The only other thing that I could think of, is if one had about an 8 inch straight edge, and if you wanted to go deluxe, throw in a good magnifying glass.