Atago 3810 PAL-1 Digital Hand Held Pocket Refractometer, 0.0 - 53.0% Brix Measurement Range Digital, handheld, pocket refractometer for low to mid-range Brix (0.0 to 53.0%), and high temperature measurement (9.0 to 99.9 degrees C) of a wide range of fruit juice, food or beverages such as soup, tomato sauce, or marmalade Light, ergonomic, compact body (10.9 x 5.5 x 3.1cm) for one-handed operation, fits in many trouser and shirt pockets Automatic temperature compensation (ATC) for accurate readings in fluctuating temperatures that display in three seconds External light interference (ELI) feature displays warning message when direct light is detected Body has Ingress Protection (IP)-65 rating for protection against dust and water