• Designed for testing ethylene glycol based coolant and also suitable for OAT (Organic Acid Technology) antifreeze • Trade professional unit accurate at all temperatures • Easy to read floating discs in transparent heavy duty plastic tube • Dual scale reads Celsius and Fahrenheit • Special discs when a float indicate the level of coolant protection • Assists in correcting coolant ratio for engines • Heavy duty rubber bulb and rubber suction tube • Temperature range: -37°C to -7°C • Overall length: 360mm Type: Tester