| 摘要 |
The clamp comprises a plurality of clamping members 15 one corresponding to each external corner of the frame. Each clamping member 15 has a pair of clamping surfaces 17 defining a jaw to receive the respective external corner of the frame. The clamping members are connected to each other by means of threaded rods 25, and are movable towards and away from each other and selectively locked against movement away from each other by nuts 27. <IMAGE> |
