Icon with dosing or dispenser funnel symbol and door and compound or raw materials symbol showing stacked/grouped particles and circular target with crosshairs or alignment marks. Used in material dosing, dispensing control systems and precision measurement applications. Indicates access control, door closure, or alternate barrier system. Used in compound processing, raw materials, quality control, material handling systems and chemical mixture monitoring interfaces. Used in measurement calibration, alignment tools, precision control and equipment adjustment interfaces. Used in batch processing control, monitoring systems and production line management interfaces.