If you had enough patience, you could count how many teaspoons there is in one ounce... like... measure one tspn, drop it in a cup, measure another, drop in the same cup, and so, and so... until you have filled one ounce in the cup. You could use water instead green dragon, as its just for measuring the volume... and it would be very useful for know the amount of weed there is en each "dose" you take.