【5 Measurement Parameters】This antifreeze refractometer measures freezing point both of the ethylene glycol antifreeze and the propylene glycol antifreeze, battery fluid specific gravity, windshield washer fluid freezing point, automotive urea concentration
【High-Definition Glass Prism】Features a high-definition glass prism for excellent light transmittance and clear, visible data
【Long-lasting Use】Built with an aluminum alloy body and a non-slip silicone cover, it is comfortable to hold, and resistant to damage
【Automatic Temperature Compensation (ATC)】 Supports ATC, allowing accurate readings for liquids between 10-30°C (compensated to 20°C), ensuring precision without manual adjustments
【Concealed Calibration Screw】Features a hidden metal calibration screw for easy adjustments, enabling the dividing line to be set accurately at the 0% scale line