5-in-1 ATC Automotive Battery Antifreeze Refractometer for Density, Ethylene-Propylene-Glycol System and Windshield Washer Fluid, Freezing Point Tester -

2. Measures the freezing point of ethylene glycol or propylene glycol-based automotive antifreeze from -50 to 0°C. Automatic Temperature Compensation (ATC): your measurements are always accurate regardless of temperature variations. 3. Measures the freezing point of ethanol or isopropyl alcohol-based windshield washer fluid from -40 to 0°C. 1. Measures battery acid density from 1.10 to 1.40 kg/l and provides a quick reference for battery fluid condition (electrolyte density and each division correspond to 0.01 g/cm³). Portable and easy-to-use design with 5 clearly defined scales for the following 3 main uses:

Adjustable focus, clearly defined scale, large, easy-to-read measurements. Accurate results guaranteed.