The body of the instrument is fixed, with a leaning of 600. Correct Refractive Index and Sugar Percentage can be read directly in the field. It consists of Abbe s Double Prisms with the Thermostat, Compensator, Telescope Mirror, Limb, Graduated Sector, Reading Magnifier and Radical Arm which carriers a Vernier. Abbe s Double prisms leaves a narrow space (about 0.1 mm) between the adjoining faces of the prisms. Compensator consists of the Amici Prisms which serve for reading the line of Ach. Separation.

TECHNICAL DATA

Measuring                :   ND. 1.3000 to1.7000

                                  ( Reflecting index)

Measuring Accuracy   :   + 0.001 by direct reading,                          

                                  + 0.0001 by estimation

Sugar % in solution   :   0 to 95% (+ 0.5%)

Dispersion                :   ND. 0.0005%