ShopTalk: Epoxy Proportions

[KADGolfer]

For the standard strength epoxy sold by Golfsmith I know that you are 
supposed to mix Part A and Part B 1:1 by volume. Does anyone know what the 
ratio is by weight? I have a balance and it is easier to weigh the stuff 
then to try and deal with small volumes.

Thanks,
KAD