Description: Measures the proportion of antifreeze and freezing of glass cleaner, lead-acid battery electrolyte. Automatically adjust itself to correct temperature discrepancies during use. Capable of measuring with high accuracy and provides precise results. Equipped with vivid and sharp reticle chart for easy and comfortable reading. It uses ambient light only and no batteries are needed. Specification: Material: Metal Line length: 155x30mm/6.1x1.2 Inch Package Includes: 1 PIiece Auto Antifreeze Tester
