Oil and Sugar refrectometer Oil and Sugar refrectometer is an indispensable tool for use of all industries using sugar, oil, fats and many other similar substances. In milk plants i is used to find the B.R. value of the milk. Oil scale/Butyroo Scale is 0 to 100 with an accuracy 0.1 direct reading on micrometers. Sugar scale is 50 to 80 with an accuracy 1% direct read on scale and 0.2% by estimation. Reflective index range is 1.42 to 1.49 by conversion table. Qty :