Clore Automotive's Viper Automotive Refractometer, No. 5026, features a variety of enhancements to make antifreeze/coolant assessment faster and easier, including an adjustable viewfinder with separate scales per fluid, easy-to-read graphics and a high-contrast lens for clear, accurate viewing. It features separate scales for ethylene glycol, propylene glycol and battery acid specific gravity. The tool also features Automatic Temperature Compensation, which enables a quick, accurate reading regardless of ambient temperature. The automotive refractometer remains the only OEM-approved method for testing the freeze point of antifreeze and coolant.