Check the listing for details. ATC Glycol Refractometer Antifreeze Battery Acid Engine Coolant Tester Tool New. Condition: New. Listed at 15.99 USD. ATC Glycol Refractometer Antifreeze Battery Acid Engine Coolant Tester Tool Features: - It is used for measuring the proportion of antifreeze and freezing of glass cleaner, lead-acid battery electrolyte. - Automatic Temperature Compensation(ATC). - Tri-scale measurement provides precise results. - Calibration knob, sharp reticle chart, non-slip rubber made the operation easier. - It uses ambient light only and no batteries are needed. Specifications: Condition:100% newColor: See PictureMaterial:Plastic & MetalSize:approx. 15.5x4cm(6.1x1.6inch)(LxW)Car Temperature Compensation:10° C~30° C (50° F~86° F) Measuring Range: Ethylene Glycol: -50 - 0 degrees celciusPropylene Glycol: -50 - 0 degrees celciusCleaning Fluids:-40 to 0 degrees celciusBattery Fluids: 1.100 - 1.400 sgResolution Factor: Ethylene Glycol: 5 degrees celciusPropylene Glycol: 5 degrees celciusCleaning Fluids: 5 degrees celciusBattery Fluids: 0.01 sg Steps for usage: