| 摘要 |
A plate (2) for use in fixating the position of a first element relative to a second element, said plate (2) comprising a body portion having a plurality of attachment mechanisms located therein, wherein said attachment mechanisms include: a first group of three attachment mechanisms susbtantially positioned within 90.degree. - 150.degree. of one another about a circle (10), and preferably within substantially 120.degree. of one another, whereby said first group of attachment mechanisms is designed to facilitate attachment of a plurality of adjustable length struts (20) to said plate; and a second group of attachment mechanisms substantially positioned about said circle (10) that are designed to facilitate attachment of accessories to said plate (2), wherein the total number of said attachment mechanisms is a multiple of three.
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