| 摘要 |
A precise center and edge finder in which the position of the center or edge of a workpiece or an aperture thereon is directly located with respect to a work tool. In one embodiment, the finder has a shank for attachment to a chuck. In another embodiment, the shank has a chamber for receiving a nozzle or other projecting work component. A laser diode directs a beam of light toward the workpiece. The beam of light projects a fine dot in direct alignment with the centerline of the work tool to the center or edge of the workpiece. A dot adjusting unit can be used to adjust the intensity and size of the dot. Alternatively, the finder projects a ring-shaped light to directly align an aperture on the workpiece with the work tool or a cross-hair shaped light to align the workpiece with an x-y axis of the work tool.
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