| 摘要 |
A tensioning apparatus for use in a security apparatus (12) including a panel having a plurality of polygonal apertures (15), a connecting member passing through one of the apertures and cooperating directly or indirectly with the surround of the door or window opening (11). The tensioning apparatus comprising a clamp (61) for use in coarse tensioning and a threaded bolt (62) screw-threaded to the clamp (61) for fine tensioning. <IMAGE>
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