We are offering abbe digital refractometer.Features:- used for measurement of refractive index (nd) of transparent or translucent liquid and solid substances & measurement of the brix of sugar solution.simple operation that needs only to set the boundary line of refraction at the cross hairdirectly indicates a measured value (in refractive index or brix %, selective) in digits together with temperature on the display.enables anybody to carry out measurement easily without reading of analog graduation.