Coolant densitometer

Glass densitometer with a balloon, suction tube and inner float, designed to measure the filling of the car radiator.

With this densitometer, glycol-based liquids as well as methanol-based coolants can be measured.

The liquid level is measured by sucking the coolant into a glass tube. By reading the values on the float, it is possible to determine the temperature (in degrees Celsius) at which the measured liquid freezes.