God, all you guys are sooo young. Those little brass nozzles are from old fashioned soda-acid fire extinguishers. These old fashioned fire extinguishers were made of copper, sometimes later ones were stainless steel, and worked when you turned them upside down. Water was mixed with baking soda and a small bottle of acid (sulfuric maybe?) was put into a small bottle and held upright internally, then the top was screwed on and the extinguisher placed on a hook on the wall or in a glass front cabinet. If there was a fire, you took the extinguisher and turned it upside down, the water/soda mixture mixed with the acid and developed instant pressure (like vinegar and baking soda) that forced the water out in a stream. The process continued until the extinguisher was empty. They were outlawed in about 1972. Replaced by dry chemical extinguishers. The nozzles are from the end of the rubber hose.
