ITEM NAME:Refractometer for automotive antifreeze tester antifreeze water battery wip R1G9 Refractometer for automotive antifreeze tester antifreeze water battery wip R1G9 Durable and built to last long Uses ambient light only which means battery or power source is not required. Heavy-duty and lightweight with its aluminum construction. Equipped with scale measurement which provides direct reading, easy to focus and calibrate. Ethylene Glycol: -50 Celsius- 0 Celsius Propylene Glycol: -50 Celsius - 0 Celsius Cleaning fluid: -40 Celsius - 0 Celsius Battery fluid: 1100 - 1400 sg - Resolution Factor Ethylene Glycol: 5 Celsius Propylene Glycol: 5 Celsius Cleaning fluid: 5 Celsius Battery fluid: 0.01sg - Reference Temperature: 20 Celsius - ATC (Automatic Temperature Compensation) Compensation Range: 10 Celsius ~ 30 Celsius(50 Fahrenheit ~ 86 Fahrenheit) - Manual calibration with mini-screw driver provided - Weight: 165g Package Included:1 x Portable Refractometer 1 x Mini Screw Driver 1 x Suction tube 1 x Soft protective carrying case 1 x English User Manual Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Ethylene Glycol: -50 Celsius- 0 Celsius. Propylene Glycol: -50 Celsius - 0 Celsius. Ethylene Glycol: 5 Celsius. Propylene Glycol: 5 Celsius. Battery fluid: 1100 - 1400 sg. 1 x Suction tube. Battery fluid: 0.01sg.