Therefore, with loose component supply device 32, stage 226 is changed in accordance with the color of leaded component 410. In detail, as described above, stage 226 is removably attached to a base of component support member 220. And, with loose component supply device 32, two types of stages are prepared: stage 226a with a white component support surface, and stage 226b with a black component support surface. Therefore, in a case in which white leaded components 410 are planned to be supplied by loose component supply device 32, as shown in FIG. 11, black stage 226b is attached to component support member 220. By this, as is evident from the figure, because the difference between the background color (color of stage 226) and the color of the target item (color of leaded components 410) is large, the outline of leaded components 410 is clear, and it is possible to appropriately determine the orientation and so on of the leaded components 410.

Also, in a case in which black leaded components 410 are planned to be supplied by loose component supply device 32, as shown in FIG. 12, white stage 226a is attached to component support member 220. By this, as is evident from the figure, because the difference between the background color (color of stage 226) and the color of the target item (color of leaded components 410) is large, the outline of leaded components 410 is clear, and it is possible to appropriately determine the orientation and so on of the leaded components 410.