| 摘要 |
A rigid plate having a work piece supporting surface is securable to a machine tool. A plurality of spindles, each rotatable about an axis perpendicular to the support surface, are journalled within the plate. Engagement means carried by each spindle detachably receive attachment means for affixing a work piece to the supporting surface. The location of each engagement means is moveable relative the supporting surface in response to rotation of the respective spindle.
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