Magnum Media DUAL SCALE 0-32% Brix and 1.000-1.130SG Wort Refractometer RSG-100ATC Beer Home Brew The BrixBrew Refractometer measures your pre-fermented Wort in seconds with just DROPS of Wort! Dual Scale Refractometer: 0.0-32.0% Brix & 1.000-1.130 CORRECTED Wort Specific Gravity ONLY Scale Resolution: 0.2% Brix and 0.001 Wort Specific Gravity Accuracy: +/-0.2% Brix and +/-0.001 Wort Specific Gravity Comes with Automatic Temperature Compensation from 10-30'C(50-86'F)