Atago 3820 PAL-2 High Range Digital Hand-Held Pocket Refractometer, Brix 45.0 to 93.0% Digital, handheld, pocket refractometer for high range Brix (45.0 to 93.0%), and high temperature measurement (9.0 to 99.9 degrees C) of high concentration samples such as jam, marmalade, maple syrup, concentrated juice, and honey Light, ergonomic, and 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 displays within 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