| 摘要 |
<p>A clamp is provided comprising a first pair of arms on first mounting and a second pair of arms on a second mounting, the first and second mountings being connected to one another and spaced from one another by linking means, each arm carrying a clamping surface which opposes a clamping surface on another arm, the spacing between the opposing clamping surface being adjustable. <??>The clamp offers a particularly versatile means for fixing the position of, for instance, two items during electrofusion welding, particularly when the means for adjusting the spacing between the opposing clamping surfaces comprise an element mounted on one of the arms and passing through a slot in the opposing arm and / or where the spacing between the first pair of arms and the second pair of arms is variable, for instance through slidable mountings, and / or where the angular position of one pair of arms relative to the other is variable, for instance via rotation. <IMAGE></p> |
