An assembly for measuring both the level and specific gravity of a liquid in a container includes a first sensor arrangement for sensing the level of the liquid in the container, and a second sensor arrangement for sensing the specific gravity of the liquid. The first sensor arrangement measures and then independently outputs at least one signal relating to the liquid level in the container. The second sensor arrangement measures and then independently outputs at least one signal relating to the specific gravity of the liquid in the container, thereby providing an integrated device to measure both parameters of the liquid.