1WIDELY MEASURING This handheld antifreeze refractometer can test the freezing point of propylene glycol, ethylene glycol, wiper fluid and automotive urea, and specific gravity of the battery fluid. 2TESTING RANGE Concentration measurement range, P: 500 propylene glycol freezing point, E: 500 ethylene glycol freezing point, C: 400 glass water freezing point, B: 104sg (specific gravity of battery fluid), A: 3035% (car urea). Minimum scale value is 0.01sg 0.10%. 3ATC FUNCTION Handheld antifreeze refractometer with automatic temperature compensation provides accurate and fast readings. Changes in ambient temperature will be considered and automatically compensated to provide accurate measurements. 4PORTABLE AND COMPACT The refractometer uses plastic and aluminum material, durable and sturdy. The handle is comfortable to hold and non slip. Compact size, light weight, easy to use and transport. 5WHAT YOU WILL GET The kit contains refractometer, cloth, instruction manual, straw, screwdriver and plastic box. Easy to operate, widely used in industrial and automotive fields.