The models of the KERN ORA-AL series are universal, maintenance-free analog hand refractometers. Their handy and robust design allows for easy, efficient, and long-lasting use in everyday life. The manual conversion effort is eliminated by several selectable scales, which prevents application errors. These scales are specially designed, precisely calculated, and verified. They also feature very thin and clear lines. The optical system and prism cover are made from special materials that enable low-tolerance measurements. All models come equipped with an eyepiece that provides an easy and smooth adjustment option for different vision strengths. The models marked with "ATC" have automatic temperature compensation, allowing for accurate measurements at varying ambient temperatures (10 °C–30 °C). Included in the delivery are a storage case, calibration solution, calibration block (if applicable), pipette, screwdriver, and cleaning cloth. Additional accessories are available for purchase. This model is particularly suitable for determining the alcohol content (volume percentage) of clear spirits. Main application areas: alcohol production.