The models of the KERN ORA-AL series are universal, maintenance-free analog hand refractometers. Their compact and robust design allows for easy, efficient, and long-lasting use in everyday situations. Manual conversion efforts are eliminated by several selectable scales, which prevents application errors. These scales are specially developed, precisely calculated, and verified. They feature very thin and clear lines. The optical system and the prism cover are made from special materials that enable low-tolerance measurements. All models are equipped with an eyepiece that provides easy and smooth adjustment for different vision strengths. The package includes a storage box, calibration solution, and, if applicable, a calibration block, a pipette, a screwdriver, and a cleaning cloth. Additional accessories are available optionally. This model is particularly suitable for determining the sugar content of the wort in beer before fermentation. The wort scale (specific gravity) allows the value to be read directly without conversion. Main application areas: brewers.