Handh. refractometer, ORA 1AB, (w/o ATC), Analogue, 0-80% mass (weight)Handh. refractometer, ORA 1AB, (w o ATC), Analogue, 0 80% mass (weight) For measuring the refractive index of transparent substances in a liquid state. Eyepiece with dioptre compensation Scale is precisely calculated and checked, with very thin and clear lines Without or with automatic temperature compensation (ATC)Measuring temperature with ATC: 10 to 30 CMeasuring temperature without ATC: 20 C For determining the sugar content of the original wort