Brix Scale: * Scale Range: 58%-90% Brix * Divisions: 0.50% Brix * Accuracy: +/- 0.50% Honey Moisture Scale: * Scale Range: 10%-33% Water * Divisions: 1.00% Water * Accuracy: +/- 1.00% Baume Specific Gravity Scale: * Be Scale Range: Be @ 20C 38% - 43% * Divisions: 0.50% * Accuracy: +/-0.50% Included are: a pipette for dropping test fluids onto the prism, a mini screwdriver for scale calibration, and a Users Guide. This refractometer is a high measurement range 58%-90%. To calibrate, you need to use something that actually has a concentration persentage between 58%-90%, then set the scale on the corresponding percentage of the liquid.