| 摘要 |
A tray for providing at least three levels of stacking between vertically adjacent trays includes a tray having four walls, a bottom, and a n adjustment member. The adjustment member can be a pin. The tray includes multiple grooves, multiple extensions, multiple recesses, and multiple projections for engagement with another vertically adjacent stacked tray. The adjustment member in combination with the multiple grooves, multiple extensions, multip le recesses, and multiple projections define a first stacking level, a second stacking level, and a third stacking level, which is intermediate to the first stacki ng level and the second stacking level. An additional stacking level is defined when vertically adjacent stacked trays are rotated 90.degree. with respect to eac h other.
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