Digital Refractometer, Hand-Held, Range 0 Percent to 100 Percent Brix, Automatic Temperature Compensation Yes, Accuracy +/-0.5 Percent, Resolution 0.001, Function Glycol Degrees F/C: Prop/Ethyl Freeze pt Degrees F/C, Features 15 Repeatable Readings with Average, ATC, Easy Clean, Plastic Construction, Removable Hinged Prism Cover and Rubber Grip, Temperature Display Degrees C and Degrees F, Zero Calibrate with Water, Length 4 13/16 in, Width 2 5/32 in, Height 1.1094 in