"Sedgewick Halbritton" > wrote in message
...
> Does anyone know of a product that can be applied to the outside of a
> carboy (i.e. sticker, rub on, overlay, etc) to indicate the wine level
> in gallon or finer divisions? I always end up guessing when blending
> from multiple carboys into a single carboy. It would also be nice to
> know exactly how much wine is in the carboy for more accurate chemical
> additions. Any ideas???
>
> Thanks,
> Charles

When I worked with equipment that we had to know what a tanks volume was we
would do what was called finger print the tank. To do this place the tank
(carboy) on a level surface. Take a known amount of liquid and pour into the
tank mark the tank. take your next known amount of liquid and do the same,
repeat until the tank is full.

Depending on how big your tank is as to how much liquid you use at a time.
Two cups may be fine for a gallon but you may want to use a half gallon of
known liquid for a 5 gallon tank.