| 摘要 |
A clamping device particularly for use in the preliminary stages of the erection of roof trusses, the clamping device comprising a first attachment means ( 11 ) to enable the device to be securely and releasably attached to one truss, a second attachment means ( 20 ) to enable the device to be attached to an adjacent device or a truss, and means ( 13 ) to enable the length between the first attachment means and the second attachment means to be varied.
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