4 cups in a quart, 4 quarts in a gallon.
16x5 = 80 cups...

16x6 = 96 cups.

It could be tedious....but, if I understand your dilemma right, you need to
just pour in all these cups of water...
take an empty milk jug, see if 16 cups fits in it, and where it fits, mark
the line..
Then take the milk jug, pour 5 or 6 of them into your carboys, mark it with
duct tape. Then you'll know.

Rick

"Dr. Richard E. Hawkins" > wrote in message
...
> Argh. I've *got* to find a way to calibrate my carboys to figure out
> exactly where 5 & 6 gallons are (particularly 6).
>
> After 6 gallons (an all juice batch) produced a 5 gallon + 4 bottles
> last week, last night it was 5 gallons and not much more than a bottle
> (but this was a concentrate batch).
>
> I need to find a reasonable, preferably cheap, way to figure the size.
>
> I wonder if milk is an exact measure? I do get 6 gallons at once each
> week . . .
>
> hawk
> --
> Richard E. Hawkins, Asst. Prof. of Economics /"\ ASCII ribbon
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