I've been wanting to find out Zim's weight and length. I have a gram scale, but I haven't gotten batteries for it yet. Until then, how can I determine his length. I know he won't sit still for something like that. I have two of his shed skins in ziplocks. Don't know why I keep them. Just something cool to look at I guess. One skin is from 12/17/06, and the other is from 2/1/07. Any way of using the latest skin to measure how long he is?