Brix scale [briks skeyl] noun
Also referred to as Balling scale. A tool used for measuring the density of sugar within a liquid. The original Balling system contained a small inaccuracy that a man named Dr. Brix noticed. He corrected the formula and it is now referred to as the Brix scale. A fruit juice might measure 15.5˚ on the Brix scale, which means it contains 15.5% sugar.