refractometer Analog refractometer with refractive index measuring range for the determination of jewellery. Subgroups refractometer ORA-G namemanufacturemodelmeasuring rangemeasurementsitem No.refractometerKernORA 1GG1,30-1,81 nD0,01 nD691150 Kontaktflüssigkeit nameVersionmanufacturecontentsitem No.Contact liquidDiiodomethaneKern2.5 ml691151