Abstract: An apparatus for topping off a fuel tank which is necessary for full tank delivery after false fuel level detection caused by fuel bubbles or splashes. This is made possible by making a spring biased valve sent for a main valve longitudinally movable and providing control means and a mechanism so that despite a trigger being in the actuated position the valve is opened when bubbles or splashes disappear.

Abstract: A device for measuring the volume of flowing liquid with temperature compensation includes a device for generating a volume signal, a device for detecting the temperature of the fluid to generate a temperature signal, and an electronic computer for receiving the volume and temperature signals to calculate a compensated volume. A device is provided for setting the value of the specific gravity of the liquid so that the computer, which is stored with coefficients for compensating the volume of various liquids each having the respective specific gravity at a standard temperature, the specific gravity being varied depending on the liquid temperature, selects one of the coefficients with reference to the set specific gravity value and the temperature value and calculates the compensated volume per volume signal and outputs the latter to a displaying device.