For measuring refraction of transparent or translucent liquid and solid, used in optical instrument factory and other reach department. With visual target, microscopic readings, fast speed, high precision, easy to use, easy to operate
Measuring range: solid refraction: 1.30～1.95
Measuring range: liquid refraction: 1.30～1.70
Accuracy: refraction nD ±5×10-5
Length of monochrome: 706.5，656.3，589.3，587.6，546.1，486.1，435.8，404.7nm
