| 摘要 |
A fluid spraying gun (10) having a disk-shaped shield (12) positioned adjacent to a spray (22) of fluid at an adjustable angle. The shield has a sharp edge (45) that can roll on a surface for creating a sharp border be- tween an area exposed to spray and an area concealed from spray. The shield also has a rounded rim on a face distal to the spray for sliding along a surface transverse to the surface the edge rolls on, allowing the formation of a sharp border along a corner between the sur- faces or the positioning of the spray a set distance from the transversely ori- ented wall. The gun also has a lip (50) for catching excess spray immediately adjacent to the edge.
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