Abbe Refractometers  Abbe Refractometers : For accurate measurement of refractive indices of transparent materials such as oils, fats, optical glass, sugar solutions and jams etc. Measuring range 1.3000 to 1.7000. Measurment of sugar 0% to 95%.                                                  Hand Refractometers  (a) With sugar scale 0-32% (b) With sugar scale 28-60% (c) With sugar scale 58-90%