| 摘要 |
A cap (18) for closing a threaded port (14) in a vessel (10) such as a pressure sprayer tank. A cup-shaped central portion of the cap (18) faces in to the vessel when the cap (18) is installed onto the threaded port (14). The c up- shaped portion is provided with indicia indicative of volumes of material. I n measuring use, the cap (18) is inverted, allowing the cup-shaped portion be used as a measuring cup to which material may be added. When the desired amount has been added, the cap (18) is re-invented to dump the material into the vessel (10). Preferably, the cup-shaped portion has a skewed rim (34) su ch that a portion of the rim forms a pouring lip.
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