Abbe refractometer is an instrument that can measure the refractive index nD and average dispersion nD-nC of transparent, translucent liquid or solid (including transparent liquid). If the instrument is connected to a thermostat, the temperature can be measured at 10 °C ~50 °C for refractive index nD. Visual sighting, optical dial reading, temperature display, simple and reliable. The base is made of stainless steel and the prism is made of hard glass, which is not easy to wear.Technical parameters ModelAR-2AR-2WMeasuring range (nD)1.3000~1.70001.3000~1.7000 (Brix)0-95%0-95%Accuracy (nD)±0.0002 (estimated reading)±0.0003 (estimated reading)Average dispersion value±0.0005±0.0005temperature displayDigital ThermometerDigital ThermometerObservation methodMonocularBinocularInstrument size200mm x 100mm x 240mm200mm x 160mm x 350mmInstrument net weight2.6kg3.6kg