1. A gauge for determining the level of diesel fuel in a fuel tank of a motor vehicle, comprising:
an elongated member, adapted to be located into and removed from a fuel tank of a motor vehicle, said member formed of plastic;
a dry layer of material coating a side of said member and which layer is soluble in diesel fuel such that upon insertion of
said member into diesel fuel in a fuel tank the portion of said layer in contact with the diesel fuel is removable to allow
a person to determine the level of diesel fuel in the tank upon removal of said member from the tank by observing said member.
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