Abbe Refractor Meter
A standard and accurate model of Abbe-Refractrometer for measurement of refractive index, dispersion and sugar concentration scale reading up to third decimal, but can be easily estimated to fourth decimal place complete in wooden box.
Measuring range : nD 1.3000 to nD 1.7000
Accuracy : 0.0001
Sugar percentage : 0 to 95% in steps or 1 div.
Dispersion : nD 0.0005.