Refractometer ATC with Brix & SG Scale

Instantly read the gravity, in Brix, of unfermented wort of fruit juice - with just a few drops of liquid. This refractometer reads gravity by measuring the angle at which the light passes through the sample. Easier to use than a hydrometer, you only need a few drops for the sample. Handheld with a metal body, flexible eye piece and rubber grip 0 to 32% Brix scale with .2% resolution and ATC (Automatic Temperature Compensation) ATC function allows you to use the refractometer in an ambient temperature range of 50-86° Fahrenheit (10-30 Celsius) Includes manual calibration knob that is secured with a lock nut; To calibrate place one drop of water on the testing platform and adjust to zero if needed