Rare enamel canteen filling funnel

A unusual, late war canteen filling funnel. These funnels where used in field kitchens and together with the 5, 10, and 18 liter aluminium “Trinkwasser” drinking water containers to fill canteens. These funnels had the capacity of exactly one standard 0.8 liter canteen. They are wide enough at the top for a 5, 10 or 18 liter drinking water  container to easily poor. It is used by holding a finger underneath the small hole underneath the funnel and then filled to the top. The funnel is then placed above a canteen and the finger is removed. The canteen will be filled quick and without spillage! The funnel is made out of enameled steel like many of the late war canteens. A nice unusual item!