Balling: The name of a density scale for measuring sugar content in water base solutions. Grape juice is primarily sugar and water and the balling scale is used for a quick and easy "sugar analysis" of juice. Balling and Brix often are used interchangeably.
The sugar concentration in grapes, must and wine, used to indicate the level of grape ripeness and expressed in degrees. Generally, the degree of grape sugar at the time of harvest is between 21 and 25 balling.
Balling: One of several hydrometer or saccharometer scales denoting the density of liquid (must, juice or new wine) in terms of specific gravity. Both the Balling and Brix scales are identical and are usually used to finely estimate sugar content.
The estimated alcohol that a wine will produce (called potential alcohol) is estimated by multiplying the Brix reading by 0.55. Therefore, a 20° Brix will make a wine with about 11 percent alcohol. The Balling scale was a comparable measurement procedure that has since been replaced by the Brix ...
See also: What is the meaning of Rough, Sweet, Temperature, Fruit, Wine?