For accurate measurement of index of refraction of transparent liquids, solids and solutions.For use in Sugar, Ghee and Oil Mills Pharmaceuticals and Chemical Laboratories, JAM Factories and Distilleries etc. Measuring range : 1.3000 to 1.7000. Measurement of Sugar : 0% to 95% Complete ND Range : N.D. 1.3000 to N.D. 1. 7000 in steps of 0.001 Accuracy : 0.0002 Sugar Percentage : 0 to 95% in steps of 1 Division Accuracy : ± 0.5% Temperature : 0 – 50º C Designed for the Accurate & quick Examination of the Refractive Indices & Mean Dispersion of Liquids. Solids & Oil.