"Automotive coolant refractometer measures the freezing point of coolants plus battery charge condition. Requires only a few drops of solution to use. Measures the freezing point of coolants Measures battery charge condition Provides accurate and repeatable measurements of % ethylene glycol and propylene glycol and F on easy to read scale Propylene range: -60F (63%) to 32F (12) Glycol range: -60F (59) to 25F (16%) Specific gravity of battery acid: 1.15 to 1.30 Automatic temperature compensation Requires only 2 to 3 drops of solution Prism and lens with a simple focus adjustment provides repeatable results Includes calibration screwdriver, calibration solution and case Model RF40 1-year limited warranty"
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