The KERN ORA 3AA Analogue Refractometer offers precise refractive index measurement for both laboratory and industrial use. Its robust, maintenance-free design ensures durability and ease of use. Featuring multiple scales for accurate, error-free readings, temperature compensation (10°C to 30°C), and a user-friendly adjustable eyepiece, it's ideal for measuring beer wort sugar content. Includes storage box, calibration solution, pipette, screwdriver, and cleaning cloth. Optional accessories available. Perfect for brewers seeking reliable measurements.