'Aging' Leos?

[Range]

Is there a way to guesstimate age?
I've heard you can get a good approximation of their age by weight/length, but the smallest scale in the house isn't sensitive enough to pick up the geckos' weight (I did measure the squirmy little things, though, and they're both approx. 6.5 inches long)
It's not the end of the world if there isn't a way, I'm just curious if there is.

 

[Retribution Reptiles]

Geckos are kinda like trees you just take a core sample and count the rings. lol. i'm just kidding of course. i don't believe there is a way to guess an age. pretty much you can figure out hatchling/juvi/adult by weight and length. That's as much as i know.