Abbe Refractometer never used measures Brix and Refractive Index Scales, Compact Benchtop Design, excellent for analysis of liquids and solids, high accuracy and wide rangesBrix 0-95 , 0.25 resolution, .15 accuracy, 0-70 Celcius sample temperatureANDRefractive Index 1.3000-1.7000, 0.0005 resolution, 0.0003 accuracy, 0-70 Celcius sample ON SALE NOW for $ 749.99USD..........