— Begin quote from “Stark”
the only problem is that I live in Thailand and I don’t have any pennies or quarters here.
— End quote
I was all proud of myself for using a common item so “anyone” could find something similar to use… and you are in Thailand. That’s pretty funny. Unfortunately, I am not familiar with the dimensions of Thai money. I guess we could ship you a penny. Maybe I’d be better off just going with the measurements route.
In a nutshell, a penny isn’t very thick. It is 0.55" which is 1.4 mm or less than 1/16" if you think in terms of fractions. My G string at the 12th fret measures about 3/64" which is about .0469" or 1.2 mm. I have a guitar pick that is is 1.14mm and it slides between the string and the fret and the string and lightly drags. Do you know what size picks you have? If you have something similar you could use them as a feeler.
In a way, the measurement doesn’t really doesn’t matter… I was just trying to convey the height on another instrument (it’s pretty low). I’d try dropping the bridge and if it gets better, keep going until it gets worse, then back it up a little. That’s the nice thing about an adjustable bridge… trial and error is a valid option because you can always reverse what you previously did.