Extech RF40 Battery Acid and Engine Coolant Refractometer

• Measures the freezing point of ethylene glycol and propylene glycol
• Max resolution 2°F
• Automatic temperature compensation
• Also displays the charge condition of automotive batteries

Product Description
Automotive coolant refractometer measures the freezing point of coolants plus battery charge condition. Requires only a few drops of solution to use…. More >>

Extech RF40 Battery Acid and Engine Coolant Refractometer