• Refractive index measuring range: 1.30000 to 1.71000 nD. Accuracy: ±0.0001. • Brix measuring range: 0 to 95%. Accuracy: ±0.05%. • High precision refractometer. • Large optical scale. • High intensity lamp for better scale visibility. • Double control knob for fine adjustments. • Digital thermometer range: 0 to 50°C. • Includes a test piece and monobromonapthalene to calibrate for users measuring solid samples. • Dimensions: 12 x 31 x 34 cm. • Weight: 9 kg.